Introduction to Database System Which of the following refers to something that can be identified in the user's work environment, something that the users want to track? Identifier Attribute Entity Relationship Identifier Attribute Entity Relationship ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In SQL, which command is used to select only one copy of each set of duplicable rows None of these All of these SELECT UNIQUE SELECT DIFFERENT SELECT DISTINCT None of these All of these SELECT UNIQUE SELECT DIFFERENT SELECT DISTINCT ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A database design may be based on existing data. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An entity is something that can be identified in the user's work environment; something that the users want to track. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Batch processing is appropriate if All of these None of these only a few transactions are involved only a small computer system is available a large computer system is available All of these None of these only a few transactions are involved only a small computer system is available a large computer system is available ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A scheme describes records and files All of these data elements None of these record relationships records and files All of these data elements None of these record relationships ANSWER DOWNLOAD EXAMIANS APP
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