Câu hỏi gốc môn DBI202

524 câu gốc, sắp theo số đề từng chứa câu đó.

20 kết quả phù hợp nhất

In an ERD, what does a line connecting two entities represent?

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What does an RDBMS consist of?

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Database data models usually have a way to go describe limitations on what the data can be, is called

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The result which operation contains all pairs of tuples from the two relations, regardless of whether their attribute values match.

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Problems such as redundancy that occur when we try to cram too much into a single relation are called __________.

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In relational database design, which normal form of a relation eliminates multi-valued attributes and ensures that data is organized at a fundamental level?

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Let E1 and E2 be two entities in an E/R diagram with simple single-valued attributes. R1 and R2 are two relationships between E1 and E2, where R1 is one-to-many and R2 is many-to-many. R1 and R2 do not have any attributes of their own. What is the minimum number of tables required to represent this situation in the relational model?

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Which of the following statements is correct when converting from the ERD model to the relational model?

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Which of the following is known as a set of entities of the same type that share same properties, or attributes?

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What does the attribute domain define in the relational model?

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The predicate in a where clause can involve Boolean operations such as and. The result of true and unknown is , false and unknown is while unknown and unknown is __.

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Which SQL clause is used to add a new column to an existing table?

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In SQL, what does the acronym ACID stand for concerning transactions?

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In which objects can Transaction be used?

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In an employee table to include the attributes whose value always have some value which of the following constraint must be used?

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In SQL, to update a relation's schema, which one of the following statements can be used?

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Domain constraints, functional dependency and referential integrity are special forms of __________

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In SQL, what is the purpose of the CLOSE statement in relation to cursors?

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Which of the following is not a typical trigger action?

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A database administrator: a person or persons responsible for the structure or schema of the database.

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Câu hỏi gốc môn DBI202

In an ERD, what does a line connecting two entities represent?

What does an RDBMS consist of?

Database data models usually have a way to go describe limitations on what the data can be, is called

The result which operation contains all pairs of tuples from the two relations, regardless of whether their attribute values match.

Problems such as redundancy that occur when we try to cram too much into a single relation are called __________.

In relational database design, which normal form of a relation eliminates multi-valued attributes and ensures that data is organized at a fundamental level?

Which of the following statements is correct when converting from the ERD model to the relational model?

Which of the following is known as a set of entities of the same type that share same properties, or attributes?

What does the attribute domain define in the relational model?

The predicate in a where clause can involve Boolean operations such as and. The result of true and unknown is , false and unknown is while unknown and unknown is __.

Which SQL clause is used to add a new column to an existing table?

In SQL, what does the acronym ACID stand for concerning transactions?

In which objects can Transaction be used?

In an employee table to include the attributes whose value always have some value which of the following constraint must be used?

In SQL, to update a relation's schema, which one of the following statements can be used?

Domain constraints, functional dependency and referential integrity are special forms of __________

In SQL, what is the purpose of the CLOSE statement in relation to cursors?

Which of the following is not a typical trigger action?

A database administrator: a person or persons responsible for the structure or schema of the database.

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Câu hỏi gốc môn DBI202

In an ERD, what does a line connecting two entities represent?

What does an RDBMS consist of?

Database data models usually have a way to go describe limitations on what the data can be, is called

The result which operation contains all pairs of tuples from the two relations, regardless of whether their attribute values match.

Problems such as redundancy that occur when we try to cram too much into a single relation are called __________.

In relational database design, which normal form of a relation eliminates multi-valued attributes and ensures that data is organized at a fundamental level?

Which of the following statements is correct when converting from the ERD model to the relational model?

Which of the following is known as a set of entities of the same type that share same properties, or attributes?

What does the attribute domain define in the relational model?

The predicate in a where clause can involve Boolean operations such as and. The result of true and unknown is ______, false and unknown is ______ while unknown and unknown is ______.

Which SQL clause is used to add a new column to an existing table?

In SQL, what does the acronym ACID stand for concerning transactions?

In which objects can Transaction be used?

In an employee table to include the attributes whose value always have some value which of the following constraint must be used?

In SQL, to update a relation's schema, which one of the following statements can be used?

Domain constraints, functional dependency and referential integrity are special forms of __________

In SQL, what is the purpose of the CLOSE statement in relation to cursors?

Which of the following is not a typical trigger action?

A database administrator: a person or persons responsible for the structure or schema of the database.

The predicate in a where clause can involve Boolean operations such as and. The result of true and unknown is , false and unknown is while unknown and unknown is __.