Tutorials
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TUTORIAL 15 · STEP 1 OF 19
MV BASIC DATA and DICT file access
Intermediate40 min
Open MV files and safely read, write, query and delete records
File variables connect BASIC to persisted data
OPEN resolves a local file pointer or Q-pointer and returns a file variable. Later READ, WRITE and DELETE statements use that variable, so account and storage details stay behind one MV BASIC interface. Always handle the ELSE branch: a missing file is an operational condition, not a value to ignore.