Domain Integrity     Entity Integrity     Referential Integrity

Q: ethe following relational expressions for the above relations. TTName( Age>25(Client)) old>2 or…

A:

Q: Explain the role of a foreign key in maintaining referential integrity. Provide a detailed example…

A: The above question is solved in step 2:-

Q: This refers to the accuracy and trustworthiness of information. a. Confidentiality b. Integrity c.…

A: We know that information Security these words have different meanings such as: Confidentiality:  Its…

Q: An attribute is a descript­ive property of an entity.

A: An entity is a “thing” or “object” in the real world that is distinguishable from all other objects.…

Q: Contrast Partial dependency and Transitive Dependency.

A: Required: Databases: Contrast Partial dependency and Transitive Dependency.

Q: base de

A: A super-type is a type of generic entity that is related to one or more sub-types. A subtype is a…

Q: oin three relation in dbms and operators select, project operation after joining

A: Relational algebra is a query language. It consists of different operations such as: Join…

Q: What are the differences between the two types of integrity constraints?

A: Integrity Constraints: Integrity Constraints are the rules that all data columns in a table must…

Q: 5. Minimal Superkeys are called a. Schema keys b. Candidate keys c. Domain keys d. Attribute keys

A: Here is the solution which is mentioned below:

Q: A __________ is a user interface control that is connected to a data source. a. DBMS component b.…

A: The answer is given below,

Q: Write a detailed contrast between "Relation" & "Relationship" in Dbms

A: Relation refers to a single table in DBMS whereas relationship refers to how two tables are…

Q: example of DBMS.

A: The simple example that is of the particular database of a university  database. And The database of…

Q: When an attribute of a primary key is null of new tuple then constraint violated is: Select one: a.…

A: A primary key is a set of attributes that uniquely identifies tuples in a relation. In other words,…

Q: Description of Constraints Violations Domain Integrity Entity Integrity

A: Domain constrain :  if the data type is in appropriate or the value of the attribute that doesn't…

Q: Define the term Entity integrity rule?

A: Given: Define the term Entity integrity rule?

Q: partial key (discriminator) in Entity Al A2 B1 B2 Entity 1 Entity 2 R1 N АЗ R2 D1 D2 C2 Entity 4…

A: The relationship between E1 and E2 is 1:N. So include primary key of E1 as foreign key into schema…

Q: difference between  Relation; Relationship

A: A relation refers to a single table in an RDBMS, whereas a relationship refers to a combination of…

Q: The CUSTOMER table’s primary key is CUS_CODE. The CUSTOMER primary key column has no null entries,…

A: Required:   The CUSTOMER table’s primary key is CUS_CODE. The CUSTOMER primary key column has no…

Q: Create a referential integrity constraint on OwnerID in PET. Assume that deletions should not…

A: Lets see the solution.

Q: Question 3. If relation R declares some attribute(s) as a Foreign Key (FK) referencing to another…

A: Foreign key is used to defined relationship between table. A foreign key of table R is refer to…

Q: tions Director and Film, where directorNum is the primary key of Director, filmNum is the primary…

A: Director.directorNum has 2 rows with value 101 Film.directorNum has last row with value 103

Q: Base construct a complete Entity Relationship lagram State the business rules. The MySejahtera…

A: ANSWERS;

Q: Description of Violations Constraints Domain Integrity Entity Integrity Referential Integrity

A: Domain Integrity:- data validation on particular column is known as domain integrity .  Entity…

Q: Domain constraints, functional dependency and referential integrity are special forms of _________.…

A: Answer: (c) Assertion

Q: Differentiate between Ternary relationship and three binary relationships.

A: Ternary relationships_: A ternary relationship_ is when three entities participate in the…

Q: Using the initial dependency diagram (attached), remove all partial dependencies, draw the new…

A: According to the given dependency diagram, there is no partial dependency but there are transitive…

Q: Is/Are requirements of the referential integrity constraints: i. The foreign key may have a null…

A: Referential integrity: A foreign-key should have a primary-key that matches it, otherwise, it will…

Q: 99. The distribution in which each row denote some related values collection is classified as a.…

A: please see the next step for solution

Q: A trigger is like a stored procedure that Oracle Database invokes automatically whenever a specified…

A: A trigger is like a stored procedure that Oracle Database invokes automatically whenever a specified…

Q: What are the two requirements to ensure entity integrity?

A: Answer: Entity Integrity: Entity Integrity ensures that there are no duplicate records within the…

Q: Define conceptual or internal mapping for a database management system (DBMS).

A: Introduction: A database management system (DBMS) is a software package that is used to construct…

Q: Write the sql ddl statments for books relational database. Specify data types, also keys and…

A: Creating a basic table involves naming the table and defining its columns and each column's data…

Q: City Cinema is required to store information for Movie Hire Business. Each Movie can be hired by one…

A: The entity in the ER diagram will be Movie (MovieID : PK)  Member (MemberID : PK)  Director…

Q: Question 12 Differentiate between the requirements of entity integrity and referential integrity…

A: Referential integrity is the level in which all values of all foreign keys are valid.…

Q: Based on your answer in (a), complete the Referential Integrity table below. Entity Yes/No…

A: Resident, complaint, category and officer all are entities as they exist independent of each other…

Q: “A trigger is like a stored procedure that Oracle Database invokes automatically whenever a…

A: “A trigger is like a stored procedure that Oracle Database invokes automatically whenever aspecified…

Q: A level of data and processing which uses HOST DBMS. Location Transparency Homogeny Transparency…

A: All levels of Data and Processing Distribution which uses HOST DBMS are

Q: Contrast the differences between range control and referential integrity when controlling data…

A: Lets see the solution.

Q: What impact does the data type of a field have on its integrity?

A: The quality and consistency of data are referred to as data integrity. When constructing databases,…

Q: EMPLOYEE relation Empl id Name Address SSN 25X15 3Y70 23Y34 Joe E. Baker Cheryl H. Clark G. Jery…

A: In Your Question Following Steps will Takes place: First Search Job Title secretary in the…

Q: Design the Facebook DB Schema using necessary Entity Relationships

A: A data model is a picture of all the elements in all the entities represented by the databases that…

Q: What is integrity cOnStrAintS?

A: Integrity constraints: Integrity constraints make sure that once the approved users modify…

Q: Given the following WORKER schema in which id is the primary key. WORKER (id, name, rank, salary,…

A: Here I have first of all modified the prompt that will be displayed on executing the procedure, as…

Q: key of Film and there is a referential integri . directorNum and Film, directorNum. Discuss all the…

A: Table Creation:

Q: Referential and entity integrity are two names for the same thing. Select one: a. False b. True

A: The entity integrity is a concept which means that in a relational database schema each and every…

Q: Define the term Referential integrity constraint?

A: Given: Define the term Referential integrity constraint?

Q: In databases, the extension (contents) of a relation may vary, but the schema (structure) generally…

A: Justification: Consider the below table:

Q: xplain integrity rules using Bank and customer as entities

A: The entity is an object of the real world. The objects like persons, employees or accounts are the…

Transaction Processing

Transaction processing is a computational style generally performed by server computers, which supports interactive applications (apps). Transaction processing is also known as information processing, which divides the work into indivisible and individual operations called transactions. The transaction is a set of tasks; a single task is considered as the minimum processing unit that cannot be divided again.