The system procedures use several system procedure tables in the master and sybsystemdb databases to convert internal system values (for example, status bits) into human-readable format. One of these tables, spt_values, is used by a variety of system procedures, including:
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The spt_values table can be updated only by an upgrade; it cannot be modified otherwise. To see how it is used, execute sp_helptext and look at the text for one of the system procedures that references it.
The other system procedure tables are spt_monitor, spt_committab, and tables needed by the catalog stored procedures. (The spt_committab table is located in the sybsystemdb database.)
In addition, several of the system procedures create and then drop temporary tables. For example, sp_helpdb creates #spdbdesc, sp_helpdevice creates #spdevtab, and sp_helpindex creates #spindtab.
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