The sysextspaces table provides information about external spaces. Indexes for the id column and the name column allow only unique values.
Column Type Description
id integer External space ID
name char(128) External space name
owner char(32) External space owner
flags integer External space flags (reserved for future use)
refcnt integer External space reference count.
locsize integer Size of external space location, in bytes
location char (256) Location of external space

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