Using ODBCDirect

DAO Summary

There are advantages and disadvantages to implementing solutions using DAO.

Advantages

The advantages of using DAO include:
  • It is a well-known interface

    DAO is the most mature object-based interface for developers.

  • DAO works well with ISAM

    DAO was designed specifically for use with ISAM databases and provides optimal performance.

  • ODBCDirect

    While not the preferred interface for connecting to ODBC databases, ODBCDirect does allow DAO to leverage performance advantages and features of Remote Data Objects.

Disadvantages

The disadvantages of using DAO include:
  • Poor performance with ODBC

    DAO was not designed to connect to ODBC data sources.

  • The DAO model emphasizes ISAM functionality

    Because DAO was built to connect to ISAM databases, its model emphasizes ISAM databases.

  • DAO is being de- emphasized

    The new ActiveX Data Objects (ADO) will replace DAO.



Microsoft Windows Architecture Training
Microsoft Windows Architecture for Developers Training Kit
ISBN: B00007FY9D
EAN: N/A
Year: 1998
Pages: 324

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