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| 例示照会プログラム (" A simple-to-use query language implemented on several relational database management systems. Using query by example, the user specifies fields to be displayed, intertable linkages, and retrieval criteria directly onto forms displayed on the screen. These forms are a direct pictorial representation of the table and row structures that make up the database. Thus, the construction of a query becomes a simple "checkoff" procedure from the viewpoint of the user. ") | |||
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| QBE (DB) | |||
| QBE | |||
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| QBE (ssn) | |||
| query-by-example (ssn) | |||
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| QBE (ssn) | |||
