105. The type of constraint which states that not even a single value with primary key can be a null value is classified as a. null integrity constraint b. primary integrity constraint c. secondary integrity constraint d. entity integrity constraint

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: 107. On a relational database, the kind of constraint which must be specified and does not contain…

A: please see the next step for solution

Q: 1.6) Constraints should be used to force valid data entry / modification to the database True …

A: 1.6) The Correct Answer for the above questions("True") Explanation⦁ In a relationship model,…

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: 11. Which of the following data constraints would be used to specify that the value of cells in a…

A: Here is the solution which is mentioned below :

Q: Which type of database constraint does the following trigger implement? a.Key constraint b.Dynamic…

A: Summary: We need to identify the type of database constraint that will implement the given trigger.

Q: Write a Stored Procedure for the below given relation to validate the user credentials (User 1 and…

A: A stored procedure has to be created to validate the user credentials which has to accept the user…

Q: Define the term Referential integrity constraint?

A: Given: Define the term Referential integrity constraint?

Q: (check all that apply) Which of the following is true about constraint names?A) it can be used for…

A: A) it can be used for DBA to identify a constraint easily:Yes. Constraints are the rules that are…

Q: When the employee salary must not be greater than JD. 2000 This is a/an Key constraint a O Domain…

A: Answer:- D. Entity Constraint

Q: Create Table Maintenance_Record( MaintenanceID int NOT NULL, Description_of_Maintenance…

A: Why error is occur : 1.In this sql query may be  , invalid column name, 2.column name does not…

Q: 10. print FLOOR(SQRT(5)) statement returns a) 5. b) 2. с) 3. d) 2.23. e) 25. 11. Which one of the…

A: I have given an answer in step 2.

Q: Which normal form requires that, no non-key attribute should functionally depend on a part of the…

A: Answer to the above question of no non-key attribute should functionally depend on a part of the…

Q: Which normal form requires that, no non-key attribute should functionally depend on a part of the…

A: Correct Answers : 1st, 2nd, 3rd Normal form

Q: An index is automatically created for a FOREIGN KEY constraint.  Select one: a. True b. False

A: When you define a foreign key constraint in database table, an index will not be created…

Q: If the functional dependencies are consistent with the above relation, put TRUE. If they are not,…

A: functional dependency determines how attributes are related to each other.

Q: If  the functional dependencies are consistent with the above relation,  put TRUE. If they are not,…

A: Rule to check functionally dependent or not .  A-> B             B is functionally dependent on A…

Q: . Foreign key is the one in which the ________ of one relation is referenced in another relation. a.…

A: In DBMS, keys are used to uniquely identify data in a table. Multiple keys from different tables can…

Q: 1NF: First Normal Form - Eliminate repeating data and non-atomic values; add keys The data is stored…

A: Solution:- Step 1The ask is to normalize the given data set and derive the 1NF, 2NF and 3NF.

Q: Which normal form requires that, no non-key attribute should functionally depend on a part of the…

A: This question says about Regardless of the typical form, no non-key attribute should depend on any…

Q: A relation that contains a minimum amount of redundancy and allows users to insert, modify, and…

A: Lets see the solution.

Q: Which are the two types of integrity constraints?

A: SQL represents Structured Query Language It allows you to get to and control information bases…

Q: 32. A main purpose of DBMS is to provide ____________ view of data to user. a. Abstract b. Partial…

A: Given that, 32. A main purpose of DBMS is to provide ____________ view of data to user.a. Abstractb.…

Q: If the functional dependencies are consistent with the above relation, put TRUE. If they are not,…

A: A functional dependency X->Y exist if the unique value of X determines a unique value of Y. If…

Q: 13. Which one of the following uniquely identifies the elements in the relation? a. Secondary Key b.…

A: Given options -  a. Secondary Key b. Primary key c. Composite key d. Foreign key

Q: To add the Identity tables to the DB context class, you can code an entity class named User that…

A: To add the Identity tables to the DB context class, you can code an entity class named User that…

Q: For each of the following statements, circle T (True) or F (False)   1 A row of data has to be all…

A: Answer :1. Rows is additionally called as Tuple in the connection data set administration framework…

Q: For the COURSE database in figure 1, write any violation of relational integrity constraints and its…

A: Introduction:-  Referential integrity:- The rule of referential integrity says that the value of…

Q: Relational schemas and other metadata about relations are stored in a structure called the…

A: The relational schemas and other metadata about relations are stored in a structure :

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: In SQL Server, DROP TABLE statement deletes only the definition and tuples of a relation. It does…

A: Note ?as per our company guidelines we are supposed to answer ?️only first 3️⃣ sub-parts. Kindly…

Q: The trigger below is defined on the relation T (C, D) with the primary key on the attr

A:

Q: Each key that meets the criteria for a primary key is called functional key a O lookup key b O…

A: According to the asked question, the solution is given below with a proper explanation.

Q: The relational schema shown below is part of a hospital database. The primary and foreign keys are…

A: It is defined as Structured Query Language, which is a computer language for storing, manipulating…

Q: signment 9:- In this assignment you have to use the Aggregate query in which there will be two-level…

A: Below is the detailed and simplified solution to the above listed problem statement:

Q: Subject: Database Write the SQL statements for following modification tasks: a) Add constraint to…

A: According to the provided information: We need to create SQL query for the addition of a primary…

Q: solve the attached query  according to the schema below DATABASE BEGIN TRAN T1 CREATE TABLE DEPT…

A: A cursor is a pointer to this context area. PL/SQL controls the context area through a cursor. A…

Q: 1. All columns in a relation instance must have distinct data values.  True  False

A: A relation is composed of two parts that are instance and schema. The database is represented as a…

Q: What is the use of integrity constraints?

A: Introduction: Data correctness and consistency in relational databases are ensured by using…

Q: A relation that has no partial functional dependencies is in ___________ normal form.

A: Given:   A relation that has no partial functional dependencies is in ___________ normal form.…

Q: Write an ALTER TABLE statement to add a CHECK constraint to the ENROLLMENT table to ensure that the…

A: The constraint is identical to an index, except that it can also be seemed to link two tables…

Q: How can i fix this error The INSERT statement conflicted with the FOREIGN KEY constraint…

A: Dear Student, There many reasons for this error but here the main reason I find to be a error is…

Q: Based on the following ER Model, write SQL statements to create the tables. Include all the…

A: create table building(BuildingCode VARCHAR2(200)  NOT NULL UNIQUE,UniqueID NUMBER PRIMARY KEY,Bname…

Q: Each relationship is mapped into a relation?

A: Relation: Relation indicates that how the elements of the sets associated with the other elements.…

Q: Create relational tables that incorporate entity integrity and referential integrity constraints.

A: Note:Always specify the tables Answer:

Q: ____ 7. which one(s) of the following SQL statements keep(s) the relation definition intact once…

A: Question 7: Option i.   Question 8: Option B.     Question 9: The character of ASCII 65 is A. So the…

Q: SQL Server provides with three views to display the relations in an SQL Server database. These views…

A: SQL server provides with three views to display relations in an SQL Server Database. These views are…

Q: Task 2 - Assume that you are working as a database administrator for XYZ Company. You are asked…

A: Create two users using your DBA permissions---- GRANT CONNECT TO username IDENTIFIED BY password.

Q: What is the minimum total number of tuples across all relations that can be entered in the database…

A: Answer One Library book has at least 2 copies. one Library book can be written by one or many…

Q: Please help with the folllowing: Consider the following declaration of a relation schema…

A: QI:  Insert INTO R (B, C) Values (353, 'B');  Screenshot of SQL program for the above insertion…