Data at the Core of the Enterprise. Objectives. Define of database systems Introduce data modeling and SQL Discuss emerging requirements of database systems. DATA. ?. INFORMATION. Attributes of data. Sharable Moveable Secure Accurate Timely Relevant. Data hierarchy. Bits
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controls & meaning
supertypes, subtypes, aggregations
integrity rules, cardinality, time
SELECT [DISTINCT] item(s)
[GROUP BY columns]
[ORDER BY row(s)]