The Select operation on tables is often combined with the ________ operation to trim tables .
A) Select
B) Project
C) Join
D) Union
Correct Answer:
Verified
Q17: A database table is technically called a
Q18: The rules for producing XML encodings of
Q19: The key field for a database of
Q20: What operation combines two tables based on
Q21: What operation takes rows from one table
Q23: Assume that you use the Product operation
Q24: Logical tables are created from a(n)
A) query
B)
Q25: Relationships in a database schema show how
A)
Q26: Rules for writing XML include
A) element names
Q27: An attribute or a set of attributes
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