Detecting and correcting data in a database or file that are incorrect, incomplete, improperly formatted, or redundant is called:
A: defragmentation.
B: data scrubbing.
C: data auditing.
D: data optimization.
A: defragmentation.
B: data scrubbing.
C: data auditing.
D: data optimization.
举一反三
- What is stored in the database is（ ）. A: data B: data mode C: links between data D: data and the connection between data
- The main functions of the database management system are () A: database maintenance B: data calculation C: data manipulation D: data definition
- In your production database， data manipulation language （DML） operations are executed on theSALES table. You have noticed some dubious values in the SALES table during the last few days. Youare able to track users， actions taken， and the time of the action for this particular period but the changesin data are not tracked. You decide to keep track of both the old data and new data in the table along withthe user information. What action would you take to achieve this task（） A: Apply fine-grained auditing. B: Implement value-based auditing. C: Impose standard database auditing to auditobject privileges. D: Impose standard databaseauditing to audit SQL statements.
- What is the main technology underpinning knowledge processing systems? A: Data mining B: Data warehouse C: Database D: Data webhouse
- A contains a collection of interrelated data, a set of programs to access the data and an environment that is both convenient and efficient to use. A: DBMS B: Database C: Database application D: Data Schema