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 ID- independent entity Weak entity Strong entity ID-dependent entity ID- independent entity Weak entity Strong entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A list in alphabetical order None of these is the result of a sort operation is in ascending order is in descending order both (b) and (c) None of these is the result of a sort operation is in ascending order is in descending order both (b) and (c) ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A ternary relationship is so called because in contains two entities and one association between them. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which command is used to select distinct subject (SUB) from the table (BOOK)? None of these SELECT ALL FROM BOOK SELECT DISTINCT SUB FROM BOOK SELECT SUB FROM BOOK All of these None of these SELECT ALL FROM BOOK SELECT DISTINCT SUB FROM BOOK SELECT SUB FROM BOOK All of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following is NOT a basic element of all versions of the E-R model? Attributes Entities Relationships Primary keys Attributes Entities Relationships Primary keys ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A relational database management (RDBM) package manages data in more than one file at once. How does it organize these file? As None of these both (a) and (b) relations tuple tables None of these both (a) and (b) relations tuple tables ANSWER DOWNLOAD EXAMIANS APP
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