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Altova MapForce 2020 Professional Edition

Some databases can have a large number of objects (such as schemas, tables, views, and so on). This topic shows you how to get on the mapping only those database objects that are required for mapping purposes. Below, we will be using a sample Access database; the instructions are similar for other database types.

 

1.On the Insert menu, click Database.

2.Click Connection Wizard, and then click Microsoft Access (ADO).

3.Click Next, and browse for the altova.mdb available in the <Documents>\Altova\MapForce2020\MapForceExamples\ folder.

 

A dialog box appears, enabling you to select the database objects to be included into the mapping.

mf_db_connect_access_03

The top node mf_ic_dbcon in the structure indicates the database connection. The subsequent structure varies depending on the database kind. For example, Oracle and IBM DB2 databases have a schema node mf_ic_db_schema under the connection node, while other database kinds have a catalog (database) ic-component_database node. Bold font indicates the default catalog (database) or schema, as applicable.

 

If your database user account has access to multiple databases or schemas on the server, you can switch to the required one by clicking the mf_ic_switch_db icon. The example below is illustrative of SQL Server; the structure may vary in other database kinds.

mf_db_switch_03

To include a database object (for example, a table) in the mapping, select the check box next to it. For the purpose of this example, select the check box next to User Tables.

 

The Object Locator button ic_object-locator allows you to find specific database items. Select a particular object (or type its name) in the combo box which appears in the lower area of dialog box.

 

The Filter button ic_filter allows you to filter objects by name. Once you click the Filter button, a filter icon is available next to objects which supports filtering (in this example, "Tables"). Click the filter icon to choose whether the object name should begin with, end with, be equal with, or contain the search text. Now you can enter the search text next to the filter (in this example, "A"):

mf_db_connect_access_04

The Show checked objects only button ic-show-check displays those items where a check box is active.

 

The Add/Edit SELECT Statement button enables you to add or edit custom SELECT statements for the current database. The data returned by such statements then becomes available as mapping source. For more information, see SQL SELECT Statements as Virtual Tables.

 

The Add/Edit Relations button enables you to define local primary and foreign key relationships between fields in the database, in addition to those that may already be present. For more information, see Defining Local Relationships.

 

The Add/Edit Recordset Structures button applies for databases that support stored procedures. It is only enabled if a stored procedure is currently selected from the database tree. For more information, see Stored Procedures.

 

The Show Preview button enables you to quickly preview the data of the currently selected table or view. Note that you can also browse and query a database independently of the mapping process, by using the Database Browser. For more information, see Browsing and Querying Databases.

 

The Strip schema from table name check box is enabled only for databases that support qualifying objects with a relative name. This is useful if you plan to switch to a different database later. For more information, see Switching Databases and Schemas.

 

When you are ready to add the database objects to the mapping, click OK. Only the selected tables, views, etc. will appear on the database component, and you can draw mapping connections to or from them in the standard MapForce way.

mf_db_objects_06

To change at any time the database objects, right-click the component, and select Add/Remove/Edit Database Objects.

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