RightMV

Tutorials

Various tutorials from beginner to expert.

TUTORIAL 17 · STEP 1 OF 16

Using indexes from TCL and MV BASIC

Advanced35 min

Build a secondary index and use it from selections and MV BASIC

01

An index turns a value into candidate item ids

A secondary index is built from a dictionary descriptor. For NAME.IDX using NAME, RightMV reads NAME from each TUTORIAL.CUSTOMERS record and stores the corresponding item ids by value. This lesson continues with the file and NAME dictionary created in the previous DATA and DICT tutorial.

Complete DATA and DICT file access first →