Open Daily: 10am - 10pm | Alley door pickup 10am - 7pm 3038 Hennepin Ave Minneapolis, MN
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  • Open Daily: 10am - 10pm
    Alley-side Pickup: 10am - 7pm

    3038 Hennepin Ave Minneapolis, MN
    612-822-4611

Open Daily: 10am - 10pm | Alley-side Pickup: 10am - 7pm
3038 Hennepin Ave Minneapolis, MN
612-822-4611
Query by Example

Query by Example

Surhone, Lambert M.
Tennoe, Mariam T.
Henssonow, Susan F.

Paperback

Programming

Currently unavailable to order

ISBN10: 6133195746
ISBN13: 9786133195745
Publisher: Vdm Verlag Dr Mller Ag & Co Kg
Pages: 96
Weight: 0.33
Height: 0.23 Width: 9.02 Depth: 6.00
Language: English
High Quality Content by WIKIPEDIA articles! Query by Example (QBE) is a database query language for relational databases. It was devised by Moshe M. Zloof at IBM Research during the mid 1970s, in parallel to the development of SQL. It is the first graphical query language, using visual tables where the user would enter commands, example elements and conditions. Many graphical front-ends for databases use the ideas from QBE today. Based on the notion of Domain relational calculus, QBE can be used as a search tool as well. A QBE parser parses the search query and looks for the keywords while eliminating words like a, an or the. A more formal query string, in languages such as SQL, is then generated, which is finally executed. However, when compared with a formal query, the results in the QBE system will be more variable.

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