| Query By Example |
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QBE is based on the notion of Domain Relational Calculus . EXAMPLE A simple example using the Suppliers And Parts Database is given here, just to give you a feel for how QBE works. This "query" selects all supplier numbers (S#) where the owner of the supplier company is "J. Doe" and the supplier is located in "Rome". Other commands like the "P." (print) command are: "U." (update), "I." (insert) and "D." (delete). The result of this query depends on what the values are for your the Suppliers And Parts Database . SEE ALSO REFERENCES
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