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A badly designed relation schema may suffer from the following (check all that a

ID: 3739680 • Letter: A

Question

A badly designed relation schema may suffer from the following (check all that apply) update anomalies attribute anomalies lack of attribute preservation deletion anomalies insertion anomalies lack of functional dependencies dependency anomalies lack of functional dependency preservation lack of lossless join property lack of union compatibility A badly designed database schema may suffer, as a whole, from the following (check all that apply). update anomalies attribute anomalies lack of attribute preservation deletion anomalies insertion anomalies lack of functional dependencies dependency anomalies lack of functional dependency preservation lack of lossless join property lack of union compatibility When you add a column to an existing table (with data) by using an ALTER TABLE command SET DEFAULT. CHECK NOT NULL UNIQUE

Explanation / Answer

Relation may suffer from

Answer:

when you add a column to an existing table by using an alter table command, the column cannot contain the specification

Answer:

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