In This Chapter

This chapter provides syntax and usage for the functions that the IBM Informix database server supplies to access-method developers. This chapter consists of the following information:

• Descriptors, following, describes the predefined data structures through which the database server and access method pass information.
• Include Files lists the header files with descriptor and function declarations that the access method must include.
• Accessor Functions lists every function provided specifically for use with the VTI.

The information in this chapter is organized in alphabetical order by descriptor and function name.

Purpose functions use the functions and data structures that this chapter describes to communicate with the database server. For details about the purpose function, refer to Purpose-Function Reference.