Informix

Informix tables and views can be documented in Predict with file objects of type XT and XV respectively. These file objects can be used to generate DDMs or CREATE TABLE/VIEW statements.

This document covers the following topics:

Naming Conventions

The following naming conventions apply to files documenting Informix tables and views.

Upper / lower case

If the Predict parameter General Defaults > Miscellaneous > Upper/lower case / Object ID is set to L, the following attributes of Informix objects are stored in upper and lower case as entered:

  • File ID (object IDs containing lower case letters are not recommended)

  • DV field expressions

  • SQL verifications

  • Check expressions

  • Constraint names

See also section Defaults in the Predict Administration documentation.

Length

  • Table/View names for Informix objects can have up to 18 characters.

  • A fully qualified ID (Creator + Hyphen + Table/View name) may not exceed 27 characters.

Permitted characters

  • IDs containing special characters must be enclosed in double quotes, for example: 

    "USR1"-"FIL£ABC"

  • See overview of permitted characters in Naming Conventions.

Informix Table, File Type XT

Attributes

Note:
Parameters not listed below are described in other sections of this documentation: Parameters common to all object types, for example Keys, are described under Global Attributes. Parameters common to all file types, for example Literal name, are described under Common File Attributes. See also Common Parameters for SQL File Types.

Parameters
Online
Y An Informix ONLINE database is used.

Note:
The following parameters are only applicable if Online is set to Y.

Extentsize Size of the initial extent for the table and and its key.
Nextsize Size of subsequent extents which are added if necessary.
Lock mode
Determines whether locking is set to page level or row level.
P Page level locking.
R Row level locking.
DBspace/Path Name of the DBspace where Informix ONLINE is to store the table. If this parameter is not specified, the table is stored in the DBspace of the database entered under in database.

Informix View, File Type XV

Attributes

Note:
Parameters common to all object types, for example Keys, are described under Global Attributes. Parameters common to all file types, for example Literal name, are described under Common File Attributes. See also Common Parameters for SQL File Types.