Database Management System (DBMS)

181. In relation algebra a new term was defined by codd as ___________:

1. Relation
2. Relation completeness
3. Relation operation
4. Relation selection

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182. How many primitive operators of relation algebra as proposed by codd:

1. 2
2. 3
3. 4
4. 6

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183. Which is a unary operation:

1. Selection operation
2. Primitive operation
3. Projection operation
4. Generalized selection

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184. Relational calculus can be divided into how many calculi:

1. 2
2. 3
3. 4
4. 5

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185. Which is relation calculus:

1. Tuple relation calculus
2. Domain relational calculus
3. Both
4. None

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186. Which calculus is based on specifying a number of tuple variables:

1. Tuple relation calculus
2. Domain relational calculus
3. Both
4. None

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187. SQL is used for interacting with ___________:

1. DBMS
2. RDBMS
3. DDL
4. SDL

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188. SQL is a ___________ languages:

1. Database languages
2. Declarative languages
3. Both
4. None

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189. ISO stands for:

1. Input standards organization
2. Interrupt standard organization
3. International standards organization
4. None of these

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190. Which is a collection of a defined group of database object like tables, indexes, tablespace:

1. Database
2. Record
3. Memory
4. All of these

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