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Question
When the correct SQL command is used to delete a table's structure, what happens to the data in the table?A) If the deleted table was a parent table, the data is added to the appropriate rows of the child table.
B) If the deleted table was a child table, the data is added to the appropriate rows of the parent table.
C) The data in the table is also deleted.
D) Nothing because there was no data in the table since only an empty table can be deleted.
Answer
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Related questions
Q:
Suppose you have created a data model for an airline based on a variety of forms, reports, user interviews, data sources, etc. Your client comes forward with a new desired report that includes passenger weights and a relationship between passengers and employees, neither of which is in your E-R diagram. You should ________.
A) create a new, separate E-R diagram with just the new information
B) add the relationship and the weight attribute to the existing data model
C) add the relationship but not the weight attribute
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ID-dependent entities are a common type of weak entity.
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Q:
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A) limits the number of columns retrieved from a table
B) limits the number of rows retrieved from a table
C) limits the number of tables retrieved from a database
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Q:
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A) relationships
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A) counting rows
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Q:
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