DatabaseHandle :: InitMainBase - Initialize main base
The function allows initializing a new main base. Main bases must be created in consecutive order. The first main base to be created would be main base 0, the next main base 1 etc. A main base 0 is created automatically, when creating a single resource database.
Creating a mainbase automatically creates a subbase 0 and a data area 0. Data area size ( dasize ) and file name refer to data area 0.
Main bases are generating local identities: 0xMMMMNNNNNNNNNNNN. MMMM is the part of the identity that contains the mainbase number.
Because of different integer presentations on different platforms databases are platform dependent and must be converted when changing the platform. It is, however, also possible to store data in platform independent format when passing true ( YES ) for the pindep parameter.
Implementation details
- mbnumber - Mainbase number
- file_path - - internal feature (not documented)
- dasize
- Size for data area
When no data area size had been defined (0), the data area expands whenever more space is needed.
The maximum size for data areas in a 32-bit versions is 4,026,531,840 (0xF0000000) bytes or nearly 4GB. For 64-bit versions, the maximum size is 281,474,976,710,656 or 256 TB.
Default: 0
- pindep
- Platform independence option
The platform independence option indicates that integer numbers are to be stored in platform independent format. This information is stored in the database header after creating the database.
Default: NO