A special operation, called JOIN combines this sequence into a single operation

Group of answer choices

True

False

Flag question: Question $12$

Question $121$ pts

IN CARTESIAN $($or CROSS$)$ PRODUCT Operation The two operands have to be "type compatible$$

Group of answer choices

True

False

Flag question: Question $13$

Question $131$ pts

The number of tuples in the result of projection p$($R$)$ is always greater or equal to the number of tuples in R

Group of answer choices

True

False

Flag question: Question $14$

Question $141$ pts

The project operation removes any duplicate tuples

Group of answer choices

True

False

Flag question: Question $15$

Question $151$ pts

PROJECT Operation is denoted by $\backslash$pi $($pi$)$

Group of answer choices

True

False

Flag question: Question $16$

Question $161$ pts

The Project operation is used to select a subset of the tuples from a relation based on a selection condition.

Group of answer choices

True

False

Flag question: Question $17$

Question $171$ pts

Relational algebra expression is a sequence of relational algebra operations forms

Group of answer choices

True

False

Flag question: Question $18$

Question $181$ pts

The RENAME operator is denoted by r $($rho$)$

Group of answer choices

True

False

Flag question: Question $19$

Question $191$ pts

In Relational Algebra both union and intersection are commutative

Group of answer choices

True

False

Flag question: Question $20$

Question $201$ pts

In Relational Algebra minus operation is commutative

Group of answer choices

True

False

Flag question: Question $21$

Question $211$ pts

In Relational Algebra both union and intersection are associative operations

Group of answer choices

True

False

Flag question: Question $22$

Question $221$ pts

Entities are specific things or objects in the mini$-$world that are represented in the database.

Group of answer choices

True

False

Flag question: Question $23$

Question $231$ pts

Attributes are properties used to describe an entity

Group of answer choices

True

False

Flag question: Question $24$

Question $241$ pts

Composite and multi$-$valued attributes may be nested arbitrarily to any number of levels, although this is rare.

Group of answer choices

True

False

Flag question: Question $25$

Question $251$ pts

Entities with the same basic attributes are grouped or typed into an entity type

Group of answer choices

True

False

Flag question: Question $26$

Question $261$ pts

The degree of a relationship type is the number of participating entity types.

Group of answer choices

True

False

Flag question: Question $27$

Question $271$ pts

A relationship relates two or more distinct entities with a specific meaning

Group of answer choices

True

False

Flag question: Question $28$

Question $281$ pts

In the Completeness $($Exhaustiveness$)$ Constraint, Total specifies that every entity in the superclass must be a member of some subclass in the specialization$/$generalization

Group of answer choices

True

False

Flag question: Question $29$

Question $291$ pts

Hierarchy has a constraint that every subclass has only one superclass $($called single inheritance$)$; this is basically a tree structure

Group of answer choices

True

False

Flag question: Question $30$

Question $301$ pts

A shared subclass is a subclass in more than one distinct superclass$/$subclass relationships

Group of answer choices

True

False

Flag question: Question $31$

Question $311$ pts

In ER diagrams, we represent the relationship type as Diamond$-$shaped box

Group of answer choices

True

False

Flag question: Question $32$

Question $321$ pts

In a recursive relationship type both participation are same entity type in different roles.

Group of answer choices

True

False

Flag question: Question $33$

Question $331$ pts

A specific entity does not have to have a value for each of its attributes.

Group of answer choices

True

False

Flag question: Question $34$

Question $341$ pts

Each attribute does not have to have a value set $($or data type$)$ associated with it

Group of answer choices

True

False

Flag question: Question $35$

Question $351$ pts

The attribute may not be composed of several components.

Group of answer choices

True

False

Flag question: Question $36$

Question $361$ pts

Cardinality Ratio $($specifies minimum participation$)($also called participation constraint

Group of answer choices

True

False

Flag question: Question $37$

Question $371$ pts

Existence Dependency Constraint $($specifies maximum participation$)$

Group of answer choices

True

False

Flag question: Question $38$

Question $381$ pts

An entity can exist in the database merely by being a member of a subclass; it must also be a member of the superclass

Group of answer choices

True

False

Flag question: Question $39$

Question $391$ pts