Introduction to Database System A large computer information system maintains many different computer files. Which amongst them is called a perpetual file? Specialized file Master file Log file Update file Specialized file Master file Log file Update file ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A good query system can accept English language commands can be accessed only by data processing professionals allows non-programmers to access information stored in a database both (a) and (b) None of these can accept English language commands can be accessed only by data processing professionals allows non-programmers to access information stored in a database both (a) and (b) None of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Keys made up of two or more attributes are called composite keys. False True False True 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? SAVE COMMIT ZIP PACK SAVE COMMIT ZIP PACK ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A minimum cardinality is the minimum number of entity instances that may participate in a relationship instance. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The functional dependency R → S means that the value of S can be determined when we are given a value of R. True False True False ANSWER DOWNLOAD EXAMIANS APP
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