Treat sap hana as a relational source. In the list of connectors, click SAP HANA. Treat sap hana as a relational source

 
 In the list of connectors, click SAP HANATreat sap hana as a relational source As a consequence, there are a great many misunderstood topics on the SAP HANA database

By contrast, SAP HANA Cloud rates 4. SAP HANA is an in-memory database that enables business users to analyse large data sets in real-time. The top three geographies of SAP HANA for relational-databases are the United States with 5481(42. " I only see "Treat SAP HANA as a relational source. Available Versions: QRC 2/2023 ; QRC 1/2023 ; QRC 4/2022 ; This document. In the Project Explorer view, you will find the corresponding source system folder in the Data Sources tree under the folder for source system type SAP HANA. There are two types of Relational data stores in SAP HANA: Row Store and Column Store. Specifies the hint clause. Customers. Enable the Davis® AI causation engine to automatically. Loading/importing works fine. Step 1: Selecting Free-hand SQL option. Treat SAP HANA as a multi-dimensional source (default) with better performance, you can use this. Ensure that the ODBC and JDBC drivers are installed and configured in the Secure agent server for connectivity to SAP HANA. Community Support Team _ Jimmy Tao If this post helps, then please consider Accept it as the solution to help the other members find it more quickly. Search Scopes:Create an OLAP connection. Treat SAP HANA as a multi-dimensional source (default) 2. Gets and sets the name of the source column mapped to the DataSet and used for loading or returning the value. The SAP HANA data lake client provides a . This site uses cookies and related technologies, as described in our privacy statement , for purposes that may include site operation, analytics, enhanced user experience, or advertising. When you create a CAP application with HANA as the database, it is not very intuitive to find how to explore tables/views of the application (being a developer). 0. Connections provide access to data from a wide range of sources, cloud as well as on-premise sources, SAP as well as Non-SAP sources, and partner tools. Create a relational container in the data lake Relational Engine container group. SAP HANA is a column-oriented, in-memory relational database that combines OLAP and OLTP operations into a single system. There is Difference between multi-Source enabled relational universe and. Metadata Management shows the following relationship types, if applicable, when you select to view impact or view lineage for an SAP HANA object: Same As: Identifies an object that exists in different source systems, as a Synonym or an Alias ; Related To: Shows the primary key and foreign key relationshipHANA is presented by SAP as a universally advantageous combination of database design combined with faster memory/storage. 391861. You can configure the EnableArrayUpsert custom property at the session level or at the PowerCenter Integration Service level, and set its. It is deployable in premise or in the cloud. Here, we have selected SAP from the list → SAP HANA database → JDBC → click. reflect. Step 1 Connect from SAP HANA, express edition to SAP HANA Cloud database Step 2 Connect from SAP HANA Cloud to SAP HANA Cloud, data lake Relational Engine Step. It needs less disk space than some of its competitors and is highly scalable. When you upsert data into SAP HANA targets, you can configure the EnableArrayUpsert custom property to upsert data in bulk and improve the session performance. When visuals are created in Power BI, the aggregate data will always be retrieved on the fly from SAP HANA. Join today to network, share ideas, and get tips on how to get the most out of Informatica1. In SAP HANA, data can be physically loaded in the batch process. Customer-organized groups that meet online and in-person. Specifies the virtual table name where the deletion is to occur. The check box "treat SAP HANA as a relational source" does not have any affect. You can see the list of SAP systems. Configure your connection as follows: Connection Name: the reference you want to give to your connection, can be the same as the DB name. Verify the connection by clicking on. Treat SAP HANA as a relational source. For more information, see DirectQuery and SAP BW. SAP HANA is the new in-memory calculation engine in-memory database. Managing Remote Sources. You can connect to this data source from Watson Query. Power. Editing Relational Source Definitions Reimporting a Source Definition Creating a Source Definition from a Target Definition Working with COBOL Sources. Each object type can also contain associated objects. 5 model which is no longer state of the art nowadays. 2) No data Back up. This offers greater. In the Files and data flyout, click Connect to. On the other hand, when using the relational source setting, Power. SAP also stated that HANA was 100% column in design, when not only was this not true but would have made it impossible to support a transaction processing application. We have selected SAP from the list → SAP HANA → JDBC → click Next. Overview of SAP HANA Cloud, data lake. For information about SAP BW, see DirectQuery and SAP BW . MySQL is ranked 4th in Relational Databases Tools with 31 reviews while SAP HANA is ranked 3rd in Relational Databases Tools with 43 reviews. 26%) customers respectively. For more information, see DirectQuery and SAP BW. Both requests from business are valid. Power BI Project Design Essentials 2. Designed from ground level up to leverage advances in the microprocessor technology to deliver a huge amount of processing power, SAP HANA is a total game-changer in database management systems. SAP HANA is deployable on premises, in a public or private cloud, and in hybrid scenarios. 6, while Teradata is rated 8. You can select SAP or non-SAP as data source and set up a relational connection to the database. 981. This document is for report developers who are new to SAP HANA modeling and reporting. Prerequisites. Description. This cannot contain spaces and should. As visuals are created, the correct aggregate data will always be retrieved from SAP HANA. All source systems that provide data for access from the SAP BW system or transfer it to SAP BW are referred to as source systems. DOWNLOAD NOW. Connect to, manage, index, and configure data lake Relational Engine instances. Yes. 05-08-2018 09:34 AM Hi Team, Im connecting to a Calculation View on Hana Database and have enabled "Treat SAP Hana as a relational source" in option sin PowerBi desktop. BI is a SAP Product, which provides the user friendly environment. 9. SAP HANA authorization is the process of granting access privileges to users using the SAP HANA database. g. Members of the container administrator role are SAP HANA database users, not data lake Relational Engine. 4. SAP HANA Cloud, Data Lake SQL Reference for Data Lake Relational Engine (SAP HANA DB-Managed) QRC 3/2023. Select SAP>SAP HANA database 2. The key to the above HANA DB statements is that the HDLFS enpoint that is. The SAP HANA database can act as a standard SQL-based relational database. Hi Olivier, in the SAP Knowledge article (3088669 - Webi Reporting using OLAP Connection to HANA Cloud is not working) we can see a recommendation to "Use a relational connection with a UNX universe". This article aims to provide a video demonstration of how to: Connect to an SAP HANA database using ODBC drivers. The SAP HANA database CREATE VIRTUAL TALBE. More Information. This means it supports the creation of further applications that offer particular functions and provide solutions for highly specific challenges. 1 ACCEPTED SOLUTION brianhartman. Allows TLS Server Name Indication (SNI) to be used, which is required by SAP HANA Cloud. 4) DS will be available in for BW Replication. In data lake Relational Engine, create a virtual table that points to the SAP HANA database table containing the data to copy. By continuing to browse this website you agree to the use of cookies. The example in the following figure uses. Toggle (real-time): Switching between virtual tables and their (hidden) real-time replicas. Through the SAP data pyramid (HANA Cloud, HANA Relational Data Lake and HANA Data Lake Files), we already see a kind of separation and the way SAP handles this evolution with their own technology. Execute the following SQL command to create credentials for the external data source connected to SQL Server data. SAP HANA is an in-memory data platform that can be deployed on premise or on demand. Care must be taken with this approach to ensure that measures are aggregated as expected, and to avoid performance issues. {"payload":{"allShortcutsEnabled":false,"fileTree":{"powerbi-docs/connect-data":{"items":[{"name":"media","path":"powerbi-docs/connect-data/media","contentType. {"payload":{"allShortcutsEnabled":false,"fileTree":{"powerbi-docs/connect-data":{"items":[{"name":"media","path":"powerbi-docs/connect-data/media","contentType. When you connect to SAP HANA data sources ,there are two options when connecting to SAP HANA,1. Certificates for SSL Connections to Remote Sources. Below a sample of how we can use Python + Diagrams with the SAP BTP icons to create your architecture diagrams. I have been trying different options and I have not been able to connect porperly to the data. Query a data lake Relational Engine database from ODBC, Java, Node. SAP HANA uses the ODBC connection. Hadoop grew out of, and specializes in, the need to apply looser standards to data management (e. Max DB: The draw backs with the In Memory are. Integration Service marks all rows. This site uses cookies and related technologies, as described in our privacy statement, for purposes that may include site operation, analytics, enhanced user experience, or advertising. To create a data lake instances choose relational-data-lake. Power. HANA client is installed in the VM where Power BI is running. Hi Amit, 1. g. In this blog post I have shown you that querying an SAP S4/HANA system using natural language is very effective, even by using a GPT-3. sl. These can be: BW systems, to provide InfoProvider data from the source BW system via the data mart interface. Data provisioning adapters are specific to each type of data source. Message 2 of 3. The application is still an ABAP application running on NetWeaver, as before, and can be monitored from PC 10. The API version shipped with this release is 1. They are designed to scale storage and compute resources seamlessly without being constrained by the limits of a single. View solution in original post. An Aggregation node represents a relational group-by and aggregation operation. Source – google image . Relational databases on-premise had been the backbone of enterprise systems, and some questioned whether the in-memory approach could really work when. There are two ways to create resources to build a universe on SAP HANA:. Q2. Connect from SAP HANA Cloud to SAP HANA, express edition via the Cloud Connector (optional) Step 4. 25 min. After you create Power BI report with this option, you can make a copy of PBIX file and change connection to views. Click on the below-highlighted icon to change the perspective which in this case will be BW modeling. Create a relational connection in Information Design Tool (IDT) for SAP HANA. Your ERP data is already in-memory, so SAP HANA can read, change, or add new. This site uses cookies and related technologies, as described in our privacy statement, for purposes that may include site operation, analytics, enhanced user experience, or advertising. {"payload":{"allShortcutsEnabled":false,"fileTree":{"powerbi-docs/connect-data":{"items":[{"name":"media","path":"powerbi-docs/connect-data/media","contentType. The DBMS, which runs on SUSE Linux and Red Hat Enterprise Linux, enables real-time analytics on transactional systems on a large. You can select SAP or non-SAP as data source and set up a relational connection to the database. Yes. Hierarchy functions are an integral part of SAP HANA core functionality. Note. Mock source systems for SAP systems, to develop scenarios for multiple source systems in a single. SAP HANA is an application that uses in-memory database technology to process very large amounts of real-time data from relational databases, both SAP and non-SAP, in a very short time. 2. 3 SP01 to connect to HANA cloud using OLAP connection and we are experiencing issues regarding the input. only database user with ROLE ADMIN privileges can create user and role in SAP HANA. The universe can be based on views and tables in HANA. in Power BI Desktop connect to an SAP HANA or SAP BW data source. The connection name cannot be changed later. Hello, I have exactly the same problem "The model doesn´t have a named expression named Cube" when trying to establish a DirectQuery to SAP BW. I only see "Treat SAP HANA as a relational source. A relational container is a repository within the container group that contains data lake Relational Engine objects. 2) Then create data source in ECC- Tcode : RSO2. This offers greater flexibility. The SAP HANA database in SAP HANA Cloud supports a variety of remote sources based on different adapter types. Connected to SAP HANA database as a SAP HANA database user, and using SAP HANA database REMOTE_EXECUTE_QUERY. For objects that are dependent on other objects, like views being dependent on tables, there could be times when the schema of the dependent. Q. The HDI Deployer assumes that for newer versions of SAP HANA, a corresponding version of the SAP HANA Service Broker is used to create the CF/XSA service bindings. Treat SAP HANA as a relational source: In this case, Power BI treats SAP HANA as a. To learn more, read our detailed Relational Databases Tools Report (Updated: October 2023). Contain the definition of a table in a relational database. Each edge connects two vertices; one vertex is denoted as the source and the other as the target. SAP HANA is an in-memory data platform that can be deployed on premise or on demand. You can read data from SAP tables and SAP HANA database modelling views. PUBLIC SAP HANA Cloud, Data Lake Document Version: 1. It is partially loading. SAP HANA is a column-oriented, in-memory relational database that combines OLAP and OLTP operations into a single system. 0). invoke(Unknown Source) at sun. SAP HANA definition. Transport Layer Security encryption: TLS. In the SAP HANA Connection dialog, enter the connection information your SAP HANA instance. NET Connector 3. The SAP HANA database can act as a standard SQL-based relational database. Database location. 0 is it possible to build reports using Bex or Bex web directely from a view in SQL /ORACLE DB without actually saving data in BI? {"payload":{"allShortcutsEnabled":false,"fileTree":{"powerbi-docs/connect-data":{"items":[{"name":"media","path":"powerbi-docs/connect-data/media","contentType. This site uses cookies and related technologies, as described in our privacy statement , for purposes that may include site operation, analytics, enhanced user experience, or advertising. : Relational connection: OLAP connection to a server: OLAP connection to an SAP HANA view, SAP BW Info. Some, but not all, members of each team need access to data from the other. Announcements. Select SAP from the drop down. {"payload":{"allShortcutsEnabled":false,"fileTree":{"powerbi-docs/connect-data":{"items":[{"name":"media","path":"powerbi-docs/connect-data/media","contentType. This site uses cookies and related technologies, as described in our privacy statement , for purposes that may include site operation, analytics, enhanced user experience, or advertising. The best SAP HANA alternative is SQLite, which is both free and Open Source. You can hold down the Shift key to select a block of sources within one folder or hold down the Ctrl key to make non. Now Power BI visuals can fall back to a previous version compatible with the current version of the server API (if available). Important: Keep in mind that access to Views is limited by a user’s SAP security permissions, so some of the Views Treat SAP HANA as a multi-dimensional source is the default selection for power bi. Connection Type: In this example, we will select the Direct option as Connection. But I can change variables in the transformation menu. Create and debug an EF Core application that connects to SAP HANA. Description. Learn about options for connecting to SAP HANA using DirectQuery in Power BI Desktop, as a multi-dimensional source or a relational source. Really appreciate! Create HANA InA connection. Understood. SAP’s data federation capabilities are built in their HANA database, which is known as Smart Data Access (SDA). 0 (with SAP . To learn more about a particular table or column, use the links provided beneath the view definition. EAI is really a glue layer between applications that should talk to each other but don’t. In order to treat a connection to SAP HANA as a relational source, you must select File Options and settings Options, then check the box under Direct Query Treat SAP HANA as a. I have "treat SAP HANA as a relational source" disabled in Power BI desktop options My connection credentials are not encrypted I am using directquery through the Power BI SAP HANA DB connector and can create a report without a problem in Power BI desktop {"payload":{"allShortcutsEnabled":false,"fileTree":{"powerbi-docs/connect-data":{"items":[{"name":"media","path":"powerbi-docs/connect-data/media","contentType. based on preference data from user reviews. Create a smart data access remote source using SQL syntax or the SAP HANA database explorer. Treat HANA as relational source is a more flexible solution because it allows calculated columns and connections to multiple HANA views. For both approaches to connecting to SAP HANA, recommendations for using DirectQuery also apply to SAP HANA, particularly recommendations related to. Figure 1: SAP HANA Data Platform Overview Variety Since the SAP HANA database system has its origins partially in document processing, support for semi- and unstructured text is part of SAP HANAÕs DNA [8]. 1 to SP 5. Open Power-BI, connect Database, choose SAP-HANA, 4)Choose to treat it a multi-dimensional source or relational source 5) done? Im basically just the guy who introduces Power BI and does Reports. Replication: Replicating tables from the remote source. Select Users (Right Click) -> New User. Editing Relational Source Definitions Reimporting a Source Definition Creating a Source Definition from a Target Definition Working with COBOL Sources. The following presents a few examples from the current catalog, which contains some 70 specialized applications. When connecting to SAP HANA using this setting, a single analytic or calculation view is selected and all the measures, hierarchies and attributes of that view will. In the SAP HANA flyout, click New connection. On the other hand, when using the relational source setting, Power BI will treat SAP HANA as a relational source and hence offers greater flexibility. 00. How to connect SAP HANA Cloud from DBeaver. Built on a Kubernetes foundation, they offer a database platform for serverless applications. In the list of connectors, click SAP HANA. To create SAP HANA Cloud instances in your subaccount, you must also grant entitlements to the desired service plan and add it to your service subscription. After you create Power BI. This site uses cookies and related technologies, as described in our privacy statement , for purposes that may include site operation, analytics, enhanced user experience, or advertising. Step 2: Selecting relational HANA connection from available list of connection from SAP BO server. 0> ODBC Drivers. Automatic corrections for run-time semantic differences between the source and target. GeneratedMethodAccessor433. SAP HANA Cloud, Data Lake SQL Reference for Data Lake Relational Engine (SAP HANA DB-Managed) QRC 3/2023. The top reviewer of MySQL writes "A great open-source product that offers great scalability and compatibility". One of the greatest is that the SAP HANA database is not a relational database. . The SAP Database Migration Factory program helps simplify and accelerate adoption of SAP HANA, SAP HANA Cloud, and SAP Data Warehouse Cloud for customers running a legacy SAP HANA database or any third-party data platform on premise or in the cloud. In order to over come these two problems SAP HANA contains a third component Max DB database. 80. Treat SAP HANA as a relational source Treat SAP HANA as a multi-dimensional source (default) with better performance, you can use this option. From the side navigation, choose Connections (Add Connection). Use Clients to Query a Data Lake Relational Engine. With HDLRE, you can only load files from the directly attached HDLFS container. Date fields in SAP HANA should be date fields and variables should be variable. Specifies a list of column identifiers, ordered in the order of values in the <value_list_clause> or <subquery>. Application Development Using SQL . Markus Kohler, Development Manager, SAP AI CTO Office. You can configure the EnableArrayUpsert custom property at the session level or at the PowerCenter Integration Service level, and set its value to yes. We would like to show you a description here but the site won’t allow us. ENC. I just installed the July 2018 release and under Options/DirectQuery, there is no longer an option for "Allow unrestricted measures in DirectQuery mode. e. With the release of HANA Cloud QRC3, all new instances of HANA Cloud, data lake relational engine will use object storage by default. SAP HANA Cloud is a single database as a service (DBaaS) foundation for modern applications and analytics across all enterprise data. SAP HANA uses the ODBC connection. Click Add to create a new data source to connect to a data lake Relational Engine database. MariaDB is rated 8. This syntax is specific to revoking SAP HANA database privileges in a data lake Relational Engine context. ]<view-name>. Follow the steps in the New Relational Connection. The first step is to upgrade the software to QRC3. Under Authentication by database user, enter: User Name: SYSTEM. Just updated Client BI 4. SAP HANA Cloud, Data Lake SQL Reference for Data Lake Relational Engine (SAP HANA DB-Managed) QRC 3/2023. where. Bulk Upsert for SAP HANA Targets. It is still possible to use the old approach to DirectQuery over SAP HANA. Configure the data source. capabilities of the SAP HANA database. Customer-organized groups that meet online and in-person. the user can only perform those operations in SAP HANA or on SAP HANA database that the privileges allow them to. The SAP HANA Cloud, data lake helps further extend data capacity with managed access. For more information, see Create a Subaccount. 06-23-2021 02:29 AM Hi, Power BI desktop not fetching all the HANA calculation views I successfully connected to the SAP HANA database from Power BI Desktop application,. Selecting the Source Database Connection. SAP HANA can make full use of the capabilities of current hardware to increase application performance, reduce cost of ownership, and enable new scenarios and applications that. Enable Column Binding. Instance Number. Open Excel and navigate to Data tab → Click the option from other sources → Click Data connection wizard → Other/Advanced. SAP HANA is a column-oriented, in-memory relational DBMS. Beginner. Some of them use DNS directly (dig, host, nslookup), while others (hostname) To verify , on the Db server run below command. Creates a tenant database with the same topology as the tenant database in the source system. " Any ideas? Solved! Go to Solution. g. SAP HANA is the new in-memory calculation engine in-memory database. One can check if the steps provided in the SAP HANA. Property. OLAP Connection Middleware: Select SAP › SAP HANA INA as OLAP middleware driver. User name: the login name of the HANA user you want to use for this connection; Password: the password of the HANA. It needs less disk space than some of its competitors and is highly scalable. These connection settings are configurable with SAP HANA data sources: Setting. [Update QRC 1/2022] The capability has been renamed to SAP HANA Cloud, Data Lake Relational Engine. {"payload":{"allShortcutsEnabled":false,"fileTree":{"powerbi-docs/connect-data":{"items":[{"name":"media","path":"powerbi-docs/connect-data/media","contentType. Check this option to. Labels: Labels: Need Help; Message 1 of 6 9,049 Views 2 Reply. How to connect SAP HANA Cloud from DBeaver. Connecting Webi to HANA - In older versions of SAP BusinessObjects (4. SAP HANA database objects. {"payload":{"allShortcutsEnabled":false,"fileTree":{"powerbi-docs/connect-data":{"items":[{"name":"media","path":"powerbi-docs/connect-data/media","contentType. Connection Type: In this example, we will select the Direct. But as HANA is an in-memory database it holds your data in persistence memory and DRAM (Volatile Memory). Every data processing activity requires different types of data, and SAP HANA supports most of them, including relational, text, graph etc. As I will come on to explain, the solution is based on a relational storage platform but it can hold non-relational data e. 00. But connect SAP HANA as a relational source, you can create relationships between the generated tables. What are the meta data of source you import while importing the relational source definition from database ? Source name. Hi @marcel_powerbi ,. An SAP HANA system is identified by a system ID (SID). That’s where we will be importing the data into. You have assigned quota to the subaccount in the SAP HANA Cloud section on the. In single-source data foundations, when showing table and column values for a table corresponding to an Analytic View, the information design tool. 5 10. Data Source Name. relational. Each product's score is calculated with real-time data from verified user reviews, to help you make the best. Open the Workspace. 00. WITH REMOTE statement supports transactional DDL. 0 is taking about the same time as BEx Web Analyzer and this is a preliminary test. The upgrade to the object storage for your instance is a two step process. 1 34 17,467. Connecting to the HANA Database First Time: Using Get Data This section describes the steps to follow the first. For information on specifying hints, see the HINT clause of the SELECT statement. However, we haven't been able to find how to setup that connections as DirectQuery, as it works in import mode by. Create an OLAP Connection. When you're provisioning a data lake instance, data lake Relational Engine is enabled by default but can be disabled. Vertices and edges can have an arbitrary number of attributes. Server. This. SAP HANA Cloud. SAP HANA is rated 8. SAP’s statements regarding lower maintenance on the SAP HANA database are most certainly unproven, and while SAP can point to some. Display the table definition of an SAP HANA database virtual table in the relational container schema. hdbsql is a text-based tool that can be used to query an SAP HANA database. Enter:DROP a Materialized View statement for Data Lake Relational Engine: This is the basic generalized syntax which Removes a materialized view from the database. Post Reply Helpful resources. SAP HANA Graph expands the SAP HANA platform with native support for graph processing and allows executing typical graph operations on the data stored in an SAP HANA system. And please select File > Options and settings and then Options > DirectQuery, then select the. Im connecting to a Calculation View on Hana Database and have enabled "Treat SAP Hana as a relational source" in option sin PowerBi desktop. Yes. A remote source can be used to create virtual tables or to use the linked database feature. Step 1) To create new user in SAP HANA Studio go to security tab as shown below and follow the following steps; Go to security node. Authentication type. (Oracle, SQL Server). This site uses cookies and related technologies, as described in our privacy statement , for purposes that may include site operation, analytics, enhanced user experience, or advertising. In Information design tool (IDT), you can create a relational connection to an SAP HANA view or table using JDBC or ODBC drivers and build a Universe using this connection to provide access to client tools like Dashboards and Web Intelligence as shown in above picture. SAP BusinessObjects BI 4. As shown below please remember to check the option of ''Treat SAP HANA as a relational source'' in setting option otherwise it treat as MDX. Currently DirectQuery over SAP HANA treats data the same as a relational source, and produces behavior similar to import. SAP also stated that HANA was 100% column in design, when not only was this not true but would have made it impossible to support a transaction processing application. It includes the relational container structure and all SAP HANA database virtual tables and data lake Relational Engine tables that are stored and managed on behalf of SAP HANA database. Note: The HDI Deployer assumes ownership of the src/, cfg/, and lib/ folders in the bound target HDI. Password: (Password you specified when you changed the default SYSTEM password) Ensure you click Multi server option. In Power BI Desktop, connect to an SAP HANA or SAP BW data source with a DirectQuery connection. When you upsert data into SAP HANA targets, you can configure the EnableArrayUpsert custom property to upsert data in bulk and improve the session performance. SAP HANA is a result of software innovations from SAP and hardware innovations from SAP partners. Select the relational object or objects you want to import. Data resides in memory (RAM) and not in the hard disk. {"payload":{"allShortcutsEnabled":false,"fileTree":{"powerbi-docs/connect-data":{"items":[{"name":"media","path":"powerbi-docs/connect-data/media","contentType. It needs less disk space than some of its competitors and is highly scalable. Check this option to. Ans. If I use direct query with "Treat HANA as relational database" I can change the data type of my date fields to date but in the transformation menu the entry "variables" is greyed out. If I use direct query without "Treat HANA as relational database" all date fields are treated as text and the data type is greyed out. Knowledge check.