A primary key in a database is a ________.
A) group of rows that identifies a unique table or file
B) column or group of columns that identifies a unique row in a table
C) group of fields or columns that represent metadata
D) group of tables or files formed to identify a unique field or row
Correct Answer:
Verified
Q1: The columns in a database are called
Q3: In a database, _ are grouped into
Q4: A database is used instead of a
Q5: Columns that are keys to different tables
Q5: What is the purpose of a database?
Q6: Albert creates a relational database to store
Q9: The rows in a database are called
Q10: The format of metadata depends on the
Q11: Metadata refers to special data that describes
Q11: Relational databases represent relationships using _.
A)foreign keys
B)file
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