Given the database schema below, write a relational algebra expression to get the count of records in the DEPENDENT relation group by Essn. Also, show the result of your query.

Q: Display the list of students who are involved in the IT club Display the details of all the…

A: First get the studid from Club table and then get those Student details This can be done using inner…

Q: What constraint is imposed on am attribute that is declared as Primary Key? What bemefit does that…

A: The solution to the given problem is below.

Q: PLZ help with the following: IN SQL Let R (A, B, C) be a relation schema. What happens if we…

A: Relational schema refers to the meta-data that describes the structure of data within a…

Q: What features do normalization procedures that use functional dependencies have?

A: Functional reliance: Between two characteristics—primary key attributes and non-key attributes…

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: A relation takes a students identification number at your college as input and outputs the students…

A: A relation takes a students identification number at your college as input and outputs the students…

Q: PLZ help with the following: Translate your ER diagram into a relational schema in the form of SQL…

A: E-R diagram is given with different attributes. From this we will create tables

Q: Consider the following relational schema and answer the following questions. Employee (Employee_Id,…

A: SQL (Structured Query Language) is used for managing and manipulating relational databases. SQL…

Q: domain relational calculus;

A: Domain Relational calculus: It is a non procedural query language that describes a query but does…

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…

Q: Simplify the following query (WHERE clause), expressed in SQL, on the example database above: SELECT…

A: This query achieves the same result as the original query but is simplified by using INNER JOINs to…

Q: ВOOK Book id Title Publisher_name

A: Given:- Write the appropriate SQL DDL statements to declare the relational library Database. Diagram…

Q: In a sql database give an example of a search problem that will work with an inner join and will not…

A: Find the answer given as below :

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.