Introduction to Database System A key: identifies a row. can only be one column. identifies a column. must always be composed of two or more columns. identifies a row. can only be one column. identifies a column. must always be composed of two or more columns. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Data encryption techniques are particularly useful for All of these protecting data in data communication systems None of these improving data integrity reducing storage space requirements All of these protecting data in data communication systems None of these improving data integrity reducing storage space requirements ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A relation is a two-dimensional table. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In order to use a record management system Both (a) and (b) You need to understand the model the record management system uses. None of these You need to understand the low-level details of how information in stored All of these Both (a) and (b) You need to understand the model the record management system uses. None of these You need to understand the low-level details of how information in stored All of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Sort/report generators do not need to sort before generating a report require more disk space than index/report generators are faster than index/report generators none of the listed here do not need to sort before generating a report require more disk space than index/report generators are faster than index/report generators none of the listed here ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A subtype entity is a special case of another entity called a supertype entity. True False True False ANSWER DOWNLOAD EXAMIANS APP
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