Introduction to Database System Which of the following contains a complete record of all activity that affected the contents of a database during a certain period of time? report writer data manipulation language transaction log query language None of these report writer data manipulation language transaction log query language None of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A tuple is a(n): key of a table. row of a table. column of a table. two dimensional table. key of a table. row of a table. column of a table. two dimensional table. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A primary key is a composite key that was selected to be the main identifier for the relation. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In SQL, which command is used to make permanent changes made by statements issue since the beginning of a transaction? PACK ZIP COMMIT SAVE PACK ZIP COMMIT SAVE ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System What is the language used by most of the DBMSs for helping their users to access data? 4GL SQL High level language Query language 4GL SQL High level language Query language ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System With respect to data input, the most accurate description of batch control is dividing documents to be entered into batches All of these comparing to a pre-calculated figure the total of a data item summed across a batch records put into the system controlling the input of each input clerk None of these dividing documents to be entered into batches All of these comparing to a pre-calculated figure the total of a data item summed across a batch records put into the system controlling the input of each input clerk None of these ANSWER DOWNLOAD EXAMIANS APP
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