Schema-Free SQL
(Sprache: Englisch)
The current standard query language SQL requires users to know how data isnormalized and stored in a database schema to compose queries. One of themajor challenges in generating these queries is the identification of joins toconnect attributes located in...
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The current standard query language SQL requires users to know how data is
normalized and stored in a database schema to compose queries. One of the
major challenges in generating these queries is the identification of joins to
connect attributes located in different relations. Constructing these joins in
SQL or through a graphical query interface is tedious, error-prone, and not
intuitive to casual users. Any new query language should maintain the expressiveness
of SQL without requiring schema knowledge or an additional
model. A new Schema-Free query system is developed to support the
automatic completion of an SQL query without the full specification of joins
and tables. A new algorithm efficiently constructs all maximal sets of lossless
joins in a schema an order of magnitude faster than previous methods. The
query system uses a new query language allowing under-specification of SQL
queries to remove the burden of schema knowledge from the user while
continuing to support the full range of SQL queries. Queries with multiple
interpretations are disambiguated through three different approaches.
Autoren-Porträt von Terrence Mason
Terrence Mason,Database Systems in Computer Science atUniversity of Iowa. Assistant Professor atUniversity of Wisconsin - Stout, Menomonie,Wisconsin.
Bibliographische Angaben
- Autor: Terrence Mason
- 2008, 132 Seiten, Maße: 17 x 24 cm, Kartoniert (TB), Englisch
- Verlag: VDM Verlag
- ISBN-10: 3836421399
- ISBN-13: 9783836421393
Sprache:
Englisch
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