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Table and Column Restrictions

Naming Convention

The following guidelines should be considered when dealing with databases:

  • Table and column names should not begin with a number.

  • Table names should not start with the letters lu.

  • Table and column names cannot match the reserved words of SQL. A list of reserved words can be found at http://msdn.microsoft.com/en-us/library/ms189822.aspx

  • Table and column names should be less than 64 characters long.

  • Table and column names should not contain a period (.), exclamation point (!), accent grave (`), pipe (|), single quote (‘), double quote (“), comma (,), asterisk (*), colon (:) or square brackets ([and]).

  • Table and column names should not lead with a space.

  • The column name DateAndTime is a reserved name. If you use this as a column name you will not be able to modify or delete it once the table is created.

Database Limitations

Microsoft Access

  • A table should have no more than 127 columns configured as only 127 columns can be updated at one time.

  • The database is restricted to 2GB in size. Once this limit is reached no more records may be inserted to the database until records are purged.

  • Support for accdb database requires the appropriate Microsoft Access Database Engine OLE-DB provider.