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Assignment for Class 12 Informatics Practices Mysql
Class 12 Informatics Practices students should refer to the following printable assignment in Pdf for Mysql in Class 12. This test paper with questions and answers for Class 12 Informatics Practices will be very useful for exams and help you to score good marks
Mysql Class 12 Informatics Practices Assignment
MYSQL REVISION TOUR
SOLVED QUESTIONS
1. What do you mean by a Database Management System?
Ans- Database Management is a collection of programs and files that allow a user to define structure of a database, store data into it, modify the structure and manipulate the data.
2. What do you mean by Relational database?
Ans-Relational Database is a type of database in which relation is used as its basic element.Row and columns are used to store data.
3. What is a foreign key?
Ans If a key is available in a table as a primary key then this key is called foreign key in another table.
4. What is primary key?
Ans-Primary key is a unique key in a relation which can uniquely identifies a tuple (row) in a given relation.
5. What is SQL?
Ans-SQL is stands for structured query language. This language is used to manipulate data stored in a table.
6. What is referential integrity?
Ans-This is a rule which ensures that in DBMS relationships between records in related tables are valid. And that user don’t accidently delete or change related data.
7. What is MySql?
Ans-Mysql is an open source RDBMS which uses SQL.
8. What is DDL?
Ans- DDL provides commands to define or redefine the schema of a table.Table is created,altered and dropped using DDL.
9. What are DML commands?
Ans- DML commands are used to manipulate data stored in a table.Insertion, deletion and modifications are possible using DML commands.
10. Maximum how many characters can be stored in a (i) text literals (ii) numeric literal
Ans-(i) Text literals can have 4000 bytes (ii) A numeric literals can store 53 digits.
11. What is null value in MySql?
Ans-If a column in a row has no value, then column is said to be null.
12. Which keyword eliminates redundant data in from a query result?
Ans- DISTINCT
13. How would you display system date as the result of a query?
Ans- CURDATE()
14. What is NOW() function in MySql?
Ans- It returns the current date and time.
15. What is NOT NULL constraint?
Ans- NOT NULL constraints impose a condition that value of a row cannot be left blank.
16. What is error in following statement? UPDATE EMPL;
Ans- WHERE clause is missing in given query.
Please refer to attached file for CBSE Class 12 Informatics Practices MYSQL Revision Tour Assignment
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CBSE Class 12 Informatics Practices Mysql Assignment
We hope you liked the above assignment for Mysql which has been designed as per the latest syllabus for Class 12 Informatics Practices released by CBSE. Students of Class 12 should download and practice the above Assignments for Class 12 Informatics Practices regularly. We have provided all types of questions like MCQs, short answer questions, objective questions and long answer questions in the Class 12 Informatics Practices practice sheet in Pdf. All questions have been designed for Informatics Practices by looking into the pattern of problems asked in previous year examinations. You can download all Revision notes for Class 12 Informatics Practices also absolutely free of cost. Lot of MCQ questions for Class 12 Informatics Practices have also been given in the worksheets and assignments for regular use. All study material for Class 12 Informatics Practices students have been given on studiestoday. We have also provided lot of Worksheets for Class 12 Informatics Practices which you can use to further make your self stronger in Informatics Practices.
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All topics given in Mysql Informatics Practices Class 12 Book for the current academic year have been covered in the given assignment
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Latest syllabus issued for current academic year by CBSE has been used to design assignments for Mysql Class 12
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