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1 line
1.4 KiB
Plaintext
1 line
1.4 KiB
Plaintext
create <rname> ( <adefs> ) <size> - create a new relation
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insert <rname> - insert tuples into a relation
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delete <rse> ; - delete tuples from relations
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update <anames> from <rse> ; - update tuples within a relation
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print [<u>] <anames> from <rse> [<i>] ; - print tuples
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sort <rname> by <snames> ; - sort a relation file
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import <fname> into <rname> - import tuples from a file
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export <rname> [<i>] ; - export tuples to a file
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extract <rname> [<i>] ; - extract definition to a file
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compress <rname> - compress a relation file
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define <mname> - define a macro
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exit - exit SDB
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<u> ::= using <fname>
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<i> ::= into <fname>
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<adefs> ::= <a list of attribute definitions>
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<rse> ::= <rnames> [where <boolean-expression>]
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<rname> ::= <a relation name>
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<rnames> ::= <a comma separated list of <rname>s>
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<aname> ::= [<rname> .] <an attribute name>
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<anames> ::= * | <a comma separated list of <aname>s>
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<sname> ::= <aname> { ascending | descending }
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<snames> ::= <a comma separated list of <sname>s>
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