Chapter 2 DB Requirements and ER Modeling
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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Minimum cardinality can be: | Optional or mandatory
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How many entities are involved in a unary relationship? | 1
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A multivalued composite attribute can be used to depict which of the following weak entity concepts? | Identifying relationship
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Which of the following is a possible type of relationship (maximum cardinality-wise)? | One-to-one
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A multivalued composite attribute can be used to depict which of the following weak entity concepts? | Identifying relationship
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Which of the following is a possible type of relationship (maximum cardinality-wise)? | One-to-one
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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