A data warehouse uses: historical operational data. partial operational data. future operational data. health care data. TRUE ANSWER : ? YOUR ANSWER : ?
Some advantages of the database approach include all, but: minimal data redundancy. improved data consistency. program-data dependency. improved data sharing. TRUE ANSWER : ? YOUR ANSWER : ?
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 : ?
Legacy data is which of the following? Data contained by a system used prior to the installation of a new system Data rejected during the installation of a new system Data contained in a file system Data contained in a newly-installed system TRUE ANSWER : ? YOUR ANSWER : ?
The primary mechanism for providing context for data is metadata. False True TRUE ANSWER : ? YOUR ANSWER : ?
Duplicate data often results in loss of data integrity because: Both A & the data formats may be inconsistent. data values may not agree. Neither A & TRUE ANSWER : ? YOUR ANSWER : ?
A database management system (DBMS) is a: hardware system used to create, maintain, and provide controlled access to a database. hardware system used to create, maintain, and provide uncontrolled access to a database. software system used to create, maintain, and provide controlled access to a database. software system used to create, maintain, and provide uncontrolled access to a database. TRUE ANSWER : ? YOUR ANSWER : ?
A shared database should: be secure. be accurate and available. All of these provide for backup and recovery. TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is true for a relational database? It is difficult to access data. All of these Complex programs have to be written for simple queries. Data is represented by tables. TRUE ANSWER : ? YOUR ANSWER : ?
The source of the data is sometimes called the system of record. False True TRUE ANSWER : ? YOUR ANSWER : ?