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DataWindow control.
Use action codes to determine the action PowerBuilder takes following events.
There are functions to insert or delete rows.
Sorting and filtering can be performed at both the server and the client. Entering or Modifying Data in Columns
Inserting Rows
Deleting Rows
Filt
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rows and columns of data.
Each row in a table has the same columns, but a column`s value for a particular row could be empty or NULL if the column`s definition allows it.
The relationship between two tables is specified by a join.
Key
ensure database integrity
Primary Key
Foreign Key
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