Examlex
A good table design usually eliminates the use of null values,so their effects on query results is not generally a concern for database developers.
Practice Sessions
Scheduled periods of time dedicated to rehearsing or exercising skills in order to improve or maintain proficiency in a specific area.
Flow
A mental state of being fully immersed and engaged in an activity, where time seems to pass unnoticed and the individual experiences great focus and enjoyment.
Career Interest
An individual's preference for certain types of work or professional activities.
O*NET
The Occupational Information Network (O*NET) is a free online database that contains hundreds of occupational definitions to help students, job seekers, businesses, and workforce development professionals to understand today's world of work in the United States.
Q4: To retrieve the projects in which all
Q10: Data in a data warehouse is usually
Q12: An M-way relationship between three entity types
Q14: To ensure that a database contains valid
Q16: A nested query in which the inner
Q23: One type of transformation that should be
Q23: Like procedures,triggers can be tested directly by
Q55: The execution of the command SELECT Cname
Q57: To improve the response time to access
Q71: The following is a functional dependency in