Examlex
A statement-level trigger is assumed if a designer omits the FOR EACH ROW keywords.
Succession
The process by which ecosystems change and develop over time, often following a disturbance.
Climate
Average weather conditions, plus extremes (records), that occur in a given place over a period of years.
Species Richness
The number of different species represented in an ecological community, landscape or region.
Freshwater
Water that contains minimal amounts of dissolved salts (salinity), found in rivers, lakes, streams, and ponds, supporting a diverse range of life.
Q2: The statement SELECT * FROM T1,T2 produces
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Q21: Assume you are using the MINUS operator
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Q31: Since a partial dependency can exist only
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Q43: To simplify the conceptual design,most higher-order relationships
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Q83: You cannot insert a row containing a