Question
Which of the following is the best example of metadata
in a database system?Solution
The correct answer is B , as metadata refers to "data about data." A database schema is a prime example of metadata, providing details about table structures, column data types, relationships, and constraints. Option A : A row of data is actual data, not metadata. Option C : Dashboards represent analyzed data, not metadata. Option D : Reports summarize data, while metadata describes it. Option E : An image file is data, not metadata.
The present ages of A and B are in the ratio 7 : 5. After 6 years, the ratio of their ages will be 4 : 3. Find A's present age.
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In a school, there are 20 teachers. The average age of all the teachers is 40 years. If the age of three principals is included, then the average age is...
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