Adding new tables and relationships to a database is difficult.
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Q41: To drop a foreign key column from
Q42: To drop a constraint,no preliminary steps are
Q43: Deleting tables and relationships is basically a
Q44: To drop a nonkey column from a
Q45: In the database redesign process,before proceeding with
Q47: To drop a primary key column from
Q48: Depending on the DBMS,when changing the minimum
Q49: Converting date,money,or other more specific data types
Q50: There are several difficulties with increasing cardinalities
Q51: Database redesign is fairly easy when _.
A)information
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