Paper Info
Title
SchemaSQL - A Language for Interoperability in Relational Multi-Database Systems
Abstract
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 be interchanged. (3) It also permits the creation of views whose schema is dynamically dependent on the contents of the input instance. (4) While aggregation in SQL is restricted to values occurring in one column at a time, SchemaSQL permits ''horizontal'' aggregation and even aggregation over more general ''blocks'' of information. (5) SchemaSQL provides a great facility for interoperability and data/meta-data management in relational multi-database systems. We provide many examples to illustrate our claims. We outline an architecture for the implementation of SchemaSQL and discuss implementation algorithms based on available database technology that allows for powerful integration of SQL based relational DBMS.
Year
Venue
Keywords
1996
VLDB
relational multi-database systems,database system
Field
DocType
ISBN
SQL,Permission,Data mining,Relational database,Interoperability,Computer science,Copying,Very large database,Database design,Relational database management system,Database
Conference
1-55860-382-4
Citations 
PageRank 
References 
120
34.34
28
Authors
3
Search Limit
100120
Name
Order
Citations
PageRank
Laks V. S. Lakshmanan16216696.78
Fereidoon Sadri2846283.70
Iyer N. Subramanian3342112.74