Using Databases

This section shows you how to write C programs that operate on records from a database. Using the SALESORD database, you can follow simple examples that show you how to do the following:

• Fetch records that match a key
• Fetch records in sequence
• Fetch records with multi-part keys by using depth
• Use foreign keys
• Write records in different ways
• Delete records
• Control multi-user systems that use a common database

This section is divided into the following topics:

• Opening and Closing Databases
• Reading Information from a Database
• Writing Information to a Database
• Deleting Information from a Database
• Contention Control
• Database Access Summary
• Database functions Quick Reference