Database Systems Practice Test 234
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The MCQs: The join operation that takes tuples from the right relation that is not matching to any from the left relation, is known as; "Relational Algebra" App (Android, iOS) with answers: left outer join, natural outer join, right outer join, and full outer join for online graduate programs. Practice Formal Relational Query Languages Questions and Answers, Google eBook to download free sample for online computer science engineering.
Relational Algebra MCQ with Answers PDF Download: Quiz 234
The join operation that takes tuples from the right relation that is not matching to any from the left relation, is known as
- Natural outer join
- Left outer join
- Full outer join
- Right outer join
Based on the authorizations that the user has been granted. If the query or update is not authorized, it is
- Submitted
- Rejected
- Accepted
- Displayed
Integrity constraints are usually identified as part of the database
- Schema definition phase
- Schema design phase
- Schema implementation phase
- Schema test phase
In case of nonbinary relationship sets, we can specify some relationship types of
- Many-to-many relationships
- One-to-one relationships
- Many-to-one relationships
- One-to-many relationships
The value used by SQL in place of all, is
- In
- As
- Null
- Like
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Computer Networks Practice Questions
- Frame Relay operates in
- Multi-Level Transmit (MLT-3) schemes use three levels
- In Asymmetric-key Cryptography, although Rivest, Shamir, and Adelman (RSA) can be used to encrypt and decrypt actual messages, it is very slow if message is
- Layered tasks involve three layers that are
- For transmission File Transfer Protocol (FTP) requires
Relational Algebra Practice Tests
- Use of keywords begin atomic ...end was introduced in
- At physical level, to allow efficient access to data, we must define
- Data dictionary is also known as
- Abstraction level that describes entire database in terms of a relatively simple structure than physical level, is
- A protocol that permits a transaction to lock a new data item only if it has not yet unlocked any data item, is called