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SchemaSQL - A Language for Interoperability in Relational Multi-Database Systems

Authors: 
Lakshmanan, L.V.S.; Sadri, F; Subramanian, I.N.
Year: 
1996
Venue: 
Proc. VLDB 96

We provide a principled extension of SQL, called
SchemaSQL , that offers the capability of uniform
manipulation of data and meta-data in relational
multi-database systems. We develop a
precise syntax and semantics of SchemaSQL in
a manner that extends traditional SQL syntax
and semantics, and demonstrate the following. (1)
SchemaSQL retains the flavour of SQL while supporting
querying of both data and meta-data. (2)
It can be used to represent data in a database
in a structure substantially different from original
database, in which data and meta-data may

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