Internal tables are structures which are used to store temporary data during processing of an ABAP program. Following are the different kind of internal tables STANDARD SORTED HASHED CategoryInternally managed byAccessPrimary table keyWhen to useHintsSTANDARDPrimary table index (that's why these tables are called index tables)Table indexTable keyAlways non-unique, i.e. duplicate entries are always allowedDefinition of an … Continue reading ABAP Internal Tables Explained: Types and Usage