The DP4 utilities for modifying the database are:
The Database Setup and Maintenance utility (MAKEDB) which allows you to modify the database data dictionary:
The Index Link Editor (SETLINK), which allows you to change the attributes of the index links between tables, including 'Check parent' and 'Child delete'. (See Index Link Analysis and Scrutiny)
The Number System Utility (NUMBSYS), which allows you to change the number system, depending on the programming language you intend to use. (See Selecting the Database Number System )
The Database Reorganisation utility (REORGDB), which allows you to reorganise the database after making a structural change. (See Reorganising the Database )
The National Language Collate setup utility (COLLATE), which allows you to change the collate sequence used for database fields of type U. (See Specifying Collate Characteristics of Key Fields )