Firebird supports virtual columns, not persistent ones and allows for sub-selects, calling built in functions, external functions and stored routines in the virtual column expression.
2.
The industry would also give consumers the right to " opt out " of inclusion in databases that store routine information, like name and address, and that are shared with other companies.
3.
The MA520 also used 64 kB DRAMs and 2732 EPROMs to reduce chip counts and expand the frame buffer to 64 kB . Although the video system could only see one bank of 32 kB, the other 32 kB could be used for a variety of purposes, including scratch buffers and storing routines.
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