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TRAN(PAt.Null_Option_Type) "Column Null Option",ĬASE WHEN Keys.Key_Name IS NULL THEN 'No' ELSE 'Yes' END "Column Is PK",ĬASE WHEN PAt.Parent_Attribute_Ref IS NULL THEN 'No' ELSE 'Yes' END "Column Is FK", TRAN(PAt.Physical_Data_Type) "Column Data Type", TRAN(PAt.Definition) "Attribute Definition", TRAN(PEn.Definition) "Entity Definition",
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Here’s the query we used to generate the data dictionary: SELECT "Entity Name",
#CA ERWIN DATA MODELER R8 WINDOWS#
Reporting in MS ExcelĪlthough the ERwin documentation linked above extensively discusses running queries using Excel via Microsoft Query, the Excel external query interface did not effectively support the ERwin metamodel queries due to SQL syntax limitations in Windows Query, the underlying query tool.Īs a result, we couldn’t load data directly from the metamodel to Excel without going through another tool first. After selecting ERwin_rX_Current you’ll see the database tree structure on the left and an empty query panel on the right ready for you to paste in your query. Taking WinSQL as the example, it opens with a request for an ODBC connection. At our site we had WinSQL and Teradata SQL Assistant.
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I was able to pull data with ODBC compliant SQL query tools. Again, in pass-through queries you can reference tables that you haven’t linked in the previous dialog To use SQL that may not be compatible with Access, select “Pass-Through” on the Query Designer ribbon and paste in the SQL.You can then treat the metamodel tables like Access tables to generate queries using the Query Designer, or have access to all metamodel tables by selecting “Pass-Through” on the Query Designer ribbon.You can select all, but there are a lot of tables so it will take a long time and use a lot of machine resources. Using CTRL-click, select the tables that you’d like to work with.Select the Machine Data Source tab, and select ERwin_rX_Current from the list of data sources.In the resulting dialog box, select “Link to the data source by creating a linked table”.Select the “External Data” tab, then “ODBC database”.Reporting in MS AccessĪccess provides a fully functional SQL interface, especially if Pass Through queries are used. You’ll get the error message shown if you try to open ERwin_rX_Current without having an ERwin model open first.ĮRwin_rX enables connection to a mart model not currently open, but for us it worked only when connecting to the model currently open.
#CA ERWIN DATA MODELER R8 HOW TO#
The Version 8 CA ERwin Modeler ODBC Reporting guide provides information how to point ERwin_rX_Current to a non-default model. If more than one model is open, then it defaults to the one opened earliest. The two versions work similarly, the v8 documentation generally is much better.ĮRwin_rX_Current, where X is the version number, connects to the model currently open on the user’s desktop.
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They are documented in the Version 8 CA ERwin Modeler ODBC Reporting Guide or the Version 9 Generating or Viewing Reports section of the manual. ODBC Drivers in the ERwin InstallĮRwin ships with two ODBC drivers, as shown. Reporting experience in MS Access, WinSQL, and MS ExcelĪt the end of the post I’ve added the query we used to generate our data dictionary, and a list of the ODBC queries included in the ERwin install.Hopefully this post will save modelers some steps in figuring out how to query the metamodel. However, I found the ERwin documentation a bit hard to decipher and not quite accurate. Luckily, it is possible to directly query the ERwin “metamodel”. It is particularly useful for the dictionary to be a filterable/sortable Excel document, but out of the box ERwin, one of the leading data modeling tools, includes a notably inflexible reporting capability. The data dictionary also provides data modelers with a useful cross reference that improves modeling productivity. The data dictionary provides a source of information about the model for those without model access, including entity/table and attribute/column definitions, datatypes, primary keys, relationships among tables, and so on. Application developers and business people accessing relational databases need data dictionaries in order to properly load or query a database.