DATABASE FUNDAMENTALS
WHAT IS DATABASE MANAGEMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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External subschema
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External schema
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External Model
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None of the above
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Detailed explanation-1: -External Schema/Level An external schema describes the part of the database which specific user is interested in. It hides the unrelated details of the database from the user. There may be “n” number of external views for each database.
Detailed explanation-2: -External Level It is also known as the view level. The external level only shows the relevant database content to the users in the form of views and hides the rest of the data. So different users can see the database as a different view as per their individual requirements.
Detailed explanation-3: -Schemas commonly use visual representations to communicate the architecture of the database, becoming the foundation for an organization’s data management discipline. This process of database schema design is also known as data modeling.