Introduction to Database System Which of the following products was an early implementation of the relational model developed by E.F. Codd of IBM? dBase-II R:base IDMS DB2 dBase-II R:base IDMS DB2 ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System If a piece of data is stored in two places in the database, then storage space is wasted both (a) and (b) it can be more easily accessed None of these changing the data is one spot will cause data inconsistency storage space is wasted both (a) and (b) it can be more easily accessed None of these changing the data is one spot will cause data inconsistency ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Every time attribute A appears, it is matched with the same value of attribute B, but not the same value of attribute C. Therefore, it is true that: A → A → (B,C). (B,C) → A → A → A → (B,C). (B,C) → A → ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following is not an advantage of the data-base approach? increased security program/data independence All of these elimination of the data redundancy ability to associate related data increased security program/data independence All of these elimination of the data redundancy ability to associate related data ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Properties that describe the characteristics of entities are called: identifiers. relationships. attributes. entities. identifiers. relationships. attributes. entities. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The purpose of a database is to help people stop using spreadsheets. True False True False ANSWER DOWNLOAD EXAMIANS APP
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