n (Logic) an uninterpreted symbolic system whose syntax is precisely defined, and on which a relation of deducibility is defined in purely syntactic terms; a logistic system, (Also called) formal theory, formal calculus Compare â formal language. 1  English Collins Dictionary - English Definition & Thesaurus.
ASM metadata is stored in disk groups â in metadata blocks. Some ASM metadata is at the fixed position in every ASM disk, and is referred to as physically addressed metadata. Other ASM metadata is organised in files (directories) and is referred to as virtually addressed metadata.
VSAM (Virtual Storage Access Method) provides a variety of ways of accessing data held on datasets. The main types of VSAM files are: Key Sequenced Data Sets (KSDS) Entry Sequenced Data Sets (ESDS) Relative Record Data Sets (RRDS) and Linear Data Sets (LDS).