Introduction to Database System A relation has cells that hold multi-value entries. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The term _____ is sometimes used to refer to a data file in which all the records have the same record format, that is, the same field names, field lengths, and data types. Table None of these Flat file Database Data structure Table None of these Flat file Database Data structure 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 SELECT UNIQUE All of these SELECT DIFFERENT None of these SELECT DISTINCT SELECT UNIQUE All of these SELECT DIFFERENT None of these SELECT DISTINCT ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which type of entity cannot exist in the database unless another type of entity also exists in the database, but does not require that the identifier of that other entity be included as part of its own identifier? ID-dependent entity Strong entity Weak entity ID- independent entity ID-dependent entity Strong entity Weak entity ID- independent entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following is not a logical data-base structure? tree relational chain network tree relational chain network ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The modify operation is likely to be done after Insert None of these All of these Delete Look-up Insert None of these All of these Delete Look-up ANSWER DOWNLOAD EXAMIANS APP
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