An enterprise data model is a relational model that shows the high-level entities for the organization and associations among those entities. False True TRUE ANSWER : ? YOUR ANSWER : ?
Some advantages of the database approach include all, but: improved data sharing. improved data consistency. minimal data redundancy. program-data dependency. TRUE ANSWER : ? YOUR ANSWER : ?
The most common source of database failures in an organization is the failure to implement a strong database administration function. True False TRUE ANSWER : ? YOUR ANSWER : ?
Database management systems were first introduced in the 1950s. True False TRUE ANSWER : ? YOUR ANSWER : ?
A shared database should: be accurate and available. All of these provide for backup and recovery. be secure. TRUE ANSWER : ? YOUR ANSWER : ?
An extranet is which of the following? The use of Internet protocols with unlimited access to company data by the company's customers and suppliers. The use of Internet protocols with unlimited access to company data by people within an organization. The use of Internet protocols with limited access to company data by the company's customers and suppliers. The use of Internet protocols with limited access to company data by people within an organization. TRUE ANSWER : ? YOUR ANSWER : ?
The source of the data is sometimes called the system of record. True False TRUE ANSWER : ? YOUR ANSWER : ?
A workgroup typically comprises between 25 and 100 persons. True False TRUE ANSWER : ? YOUR ANSWER : ?
Data administrators are responsible for: writing application programs. overall management of data resources in an organization. physical database design. managing technical issues in the database environment. TRUE ANSWER : ? YOUR ANSWER : ?