What are the major roles and responsibilities of database administrators?
What will be an ideal response?
Database administrators (DBAs) are the people responsible for managing the databases within an organization. They perform regular maintenance, assign and monitor user access to the database, monitor the performance of the database system, perform backups, and carry out other necessary maintenance and security duties. Database administrators also work closely with database designers, developers, and programmers to ensure that the integrity and security of the data will remain intact when a new system is designed or changes are made to an existing system. The DBA also periodically runs reports and checks the data in the database to confirm that the structural integrity of the data isintact.
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When pictures are included in a blog, they are stored:
A) as a placeholder in the text file. B) as a separate file that is unrelated to the blog. C) together with the text of the blog as one file. D) as a separate file with a link in to the text file.
The function used to calculate the average of cells specified by a given set of conditions is ________
A) AVERAGEIFS B) AVERAGE C) CRITERIA D) AVERAGEIF
Each database record needs one field that uniquely identifies the record; this field is called the ____ key.
A. major B. primary C. unique D. selected
A ____ is a control structure that repeatedly executes a statement or a series of statements while a specific condition is true or until a specific condition becomes true.
A. flow B. switch C. decision D. loop