A database application can perform which of the following activities? Add records Read records All of these Update records TRUE ANSWER : ? YOUR ANSWER : ?
Stored representations of objects and events that have meaning and importance in the user's environment are known as a database. False True TRUE ANSWER : ? YOUR ANSWER : ?
An enterprise data model is: a non-graphical model that shows the high-level entities for an organization. a non-graphical model that shows the all entities for an organization. a graphical model that shows the high-level entities for an organization. a graphical model that shows all entities for an organization. TRUE ANSWER : ? YOUR ANSWER : ?
Databases that contain historical and summarized information are usually called data warehouses. False True TRUE ANSWER : ? YOUR ANSWER : ?
A workgroup typically comprises between 25 and 100 persons. False True TRUE ANSWER : ? YOUR ANSWER : ?
A data warehouse uses: health care data. historical operational data. future operational data. partial operational data. TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is true for a relational database? Complex programs have to be written for simple queries. It is difficult to access data. Data is represented by tables. All of these TRUE ANSWER : ? YOUR ANSWER : ?
Data administrators are responsible for: managing technical issues in the database environment. writing application programs. physical database design. overall management of data resources in an organization. TRUE ANSWER : ? YOUR ANSWER : ?
An advantage of the database approach is the creation of maximum data redundancy. False True TRUE ANSWER : ? YOUR ANSWER : ?
Metadata enables database designers and users to do all of the following except: what the fine distinctions are between similar data items. what the data mean. understand what data exist. sample data. TRUE ANSWER : ? YOUR ANSWER : ?