which database level is closest to end users select one: a. none of the above b. internal level c. external level d. conceptual level
Answers
which database level is closest to end users select one:
a. none of the above b. internal level
c. external level d. conceptual level
Answer :
c. external level
Explanation :
The external layer is the highest level in the architecture and is closest to the user. The externalr level is also known as the visual level.
The external layer displays database content as views to the user only contextually and hides the rest of the data. In the external level, the user can see the data as a separate view according to his needs, so it is closest to the user.
There are three types of data layer,
- physical level
- conceptual level
- external level
The physical level is the lowest level of the three-tier data level. The conceptual level is at a higher level than the physical level.
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