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Problem
1. Write the SQL queries using Data Manipulation Language (DML) statements.
>> Writing SQL using DML for each part:
2. Create the payroll database considering table employee.
1. Do simple queries on the above database.
i. list all information of the above both tables.
ii. list the empno, ename, jobtitle,and hiredate of employee from the employee table.
2. list the name, salary of the employees who are clerks. 3. list the name,job,salary of every employee joined on certain date. (say ‘december 17,1980') 4. list name and annual salary of all the employees. 5. list the employees who have salary between certain range (say between Rs. 1000 & 2000)
>> Creating database according to 5 subparts
Describe the four main ways of optimising disk block access. Ans: a. Disk b. Non-volatile writes buffers c. File organization (Clustering) d. Log-based file system
1. Based on the dependency diagram, create a database whose tables are in at least 2NF, showing the dependency diagram for each table (as shown in class). Label the types of depe
What is meant by data-transfer rate? The data-transfer rate is the rate at which data can be retrieved from or kept to the disk.
What is entity in DBMS? Entity: A DBMS entity is either a thing in the modelled world or a drawing element in an ERD.
What are the advantages of using a DBMS? The benefits of using a DBMS are a) Controlling redundancy b) Restricting unauthorized access c) Giving multiple user interfac
What is Relational calculus? Relational calculus is a Non- Procedural language.
entity relationship diagram about finance
What is Nested Queries explain in details? Nested Queries - A SELECT query could have subquery(s) in it. While a SELECT query having another SELECT query in it, is known as n
Explain how the associations are implemented as classes. A general approach in this case is to transform an association class into a simple class linked to two original classes
Project Description: I would like to get a database of a website which has clients email name and phone number. If you are able to get information from a website, by entering
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