A data model describes data, whereas a database explains the relationships among the data that will be stored in the database.
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Q12: A key is a column or group
Q17: A DBMS is a software that helps
Q18: A group of similar rows or records
Q19: The rows in a database need to
Q20: A database is best described as a
Q22: A crow's foot notation would indicate the
Q23: The crow's-foot notation of an E-R diagram
Q23: In data models, physical objects are represented
Q24: Some type of locking must be used
Q31: Attributes are used to describe characteristics of
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