Using the following relations: Relation s ABC 1 2 2 3 1 1 1 1 Relation t BcD 2 1 1 2 3 3 2 1 Give the relation that results from each relational algebra expression below. Please label each column in the result with the appropriate attribute name. a. ( TTAS S) |X| ( TTBc t) b. (( TTAB S ) |x| ( Tac t)) -s c. S |x| t

Q: EmployeeID is the primary key for the relation below. Which column violates a rule (characteristic)…

A: When creating column names for tables in a relational database, it's important to follow certain…

Q: Given the relation schema R(A, B, C) and S(C, D, E), please match each of the following relational…

A: ANSWER:

Q: nformally describe the conditions to be met for a relation to be in Third Normal Form. Describe why…

A: 1. For a relation to be in 3NF, all the functional dependencies should be in form X->Y where X is…

Q: Consider the following 4 queries for relation ASG SELECT 3- ENO ASG FROM WHERE RESP=Value q2: SELECT…

A: It is the method of saving separate copies of a database on couple or more sites. It is a popular…

Q: LEGAL_ENTITY LE_No LE Name LE_Net Worth Person_Or_Org LE_Type (Plaintiff? Defendant?) LE_Type:…

A: ER diagrams mainly comprise of Entity and its attributes and the Relationship, which is association…

Q: Compute the average number of hours for the courses offered by each college.

A: Below i have written the query:

Q: In what normal form is the LOTS relation schema in the Figure with respect to the restrictive…

A: The relationship data, if it is in a first NF and all non key depend on primary attribute. Then the…

Q: Implement a new independent entity phone in the Sakila database. Attributes and relationships are…

A: There is only one error in the above code and that is the ALTER TABLE command on the address table.…

Q: The degree is the number of tuples in a relation. Select one: a. False b. True

A: Relational Database: Table is called as relation or file. Row is called as tuple. Column is called…

Q: Question 5 Given the relation schema R(A, B, C) and S(C, D, E), please match each of the following…

A: 1) Symbol for UNION operation is : U

Q: In relational algebra, how would one select just the name from the student relation? Select one: a.…

A: Relational algebra : It is a widely used procedural query language. They collects instances of…

Q: names, attribute names, primary keys and foreign keys as shown in below example: Relation1…

A: Relational schema shows how information is stored and organized within a database. The basic…

Q: Given the relation schema R(A, B, C) and S(C, D, E), please match each of the following relational…

A: 1-G 1. R U  S === G. (From the given quetion) SELECT * FROM R UNION SELECT * FROM S;

Q: Consider the following relations Company and Product. Give the result for the following relational…

A: The meaning of the relational algebra statement in part A is that we have to find product 'PName'…

Q: EmpID and OrderlD are unique identifiers. An employee may have more than one certificate.…

A: The given problem is related to relational database modeling where an Entity Relationship diagram is…

Q: The table STUDENT has the attributes STUDENT_ID, NAME, SCHOOL_ID, and ADDR. The table SCHOOL has the…

A: The objective of the question is to identify the correct SQL query that will create a table showing…

Q: 5.6 LAB - Implement independent entity (Sakila) Implement a new independent entity phone in the…

A: First check whether phone_id column exists in your customer, staff, and store table or not. If…