1) What are 'Assertions' and "Triggers' in SQL? Why do you need them? Explain with examples.

Q: Consider the relational database of Figure 3.19. Give an expression in SQL for each of the…

A: a. Modify the database so that the employee whose ID is '12345' now lives in “Newtown”. Answer:…

Q: To what extent does SQL differ from other languages?

A: The most common language for accessing databases is Structured Query Language (often abbreviated as…

Q: Please look at this schema. Please convert this into a relational schema (you can give the answer as…

A: Solution- Data Model Diagram to Relational Database Conversion Rules: 1. Each entity in Data Model…

Q: 154 -- Figure out and return for each employee the gender based on the title of courtesy 155 Ms.,…

A: In modern database management systems, it's often required to derive insights or information from…

Q: 4. For this problem create a table called instructor_course_nums. Write a procedure that accepts an…

A: Answer is given below .

Q: Write the SQL code that will list all of the drivers in the database that have been issued tickets.…

A: We will use the MySQL codes to find all the data asked in the question.

Q: Question [1]: [5 marks] Write the suitable SQL statement to answer the following questions based on…

A: Hi. check below for your answer

Q: 32. In a relational model, relations are termed as a. Tuples b. Attributes c. Rows d. Tables

A: The relational data model is a representation of the relationships between different relations in a…

Q: Consider the relational schema shown in Figure 8.8. Give a schema definition in SQL corresponding to…

A: The types Employee, Company, Works and Manages are created for making the schema in SQL.The primary…

Q: emp (eno, ename, bdate, title, salary, dno) proj (pno, pname, budget, dno) dept (dno, dname, mgreno)…

A: A database can be defined in such a way that it is an organized collection of structured information…

Q: Classes(class, type, country, numGuns, bore, displacement) Ships(name, class, launched)…

A: 1.select class column and perform intersection between class of two contries and it should give…

Q: 1. List all book titles titles published between 2012 to 2020. 2. List all copies of the book titled…

A: Dear Student, As per our company guidelines we are supposed to answer ?️only first 3️⃣ sub-parts.…

Q: "books" entity and insert some sample data, and then alter the table to add a new column for the…

A: Dear Student, The below answer demonstrates the steps to create a table for the "books" entity in a…

SQL Query

Structured Query Language is the full form of SQL. It is one of the standard languages to deal with the relational database. It is used to insert, update, delete, and search the records stored in a RDBMS. The relational databases are created and managed by using SQL.