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Assignment for Class 12 Informatics Practices More Rdbms
Class 12 Informatics Practices students should refer to the following printable assignment in Pdf for More Rdbms 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
More Rdbms Class 12 Informatics Practices Assignment
More RDBMS(Relational Database Management System)
Q.1: What do you mean by DBMS and Transaction Management ?
Suppose Raunak's account number is 3246 and his aunt's account number is 5135. In order to process the cheque presented by Raunak, the following two SQL commands need to be executed on the database maintained by the bank:
UPDATE Savings SET balance = balance – 2000 WHERE account_no = 5135; For Aunt's account
UPDATE Savings SET balance = balance + 2000 WHERE account_no = 3246; For Raunak's account
The above two Updates should both take place. If the first Update takes place and there is a system failure, the first updation should be undone. Either both the updations should be done and if it is not possible for both the updations to be done, then no updation should be done.
Q. 2: What is a Transaction?
A Transaction is a unit of work that must be done in logical order and successfully as a group or not done at all. Unit of work means that a Transaction consists of different tasks - but together they are considered as one unit. Each transaction has a beginning and an end. If anything goes wrong in between the execution of transaction, the entire transaction (No matter to what extent has been done) should be cancelled. If it is successful, then the entire transaction should be saved to the database.
A transaction is a unit of work that must be done in logical order and successfully as a group or not done at all.
In Raunak's case, both the updation statements constitute a transaction. Both are together treated as a single unit.
Q.3: how transactions are managed ?
let us study the following 3 statements of SQL:
• START TRANSACTION statement
• COMMIT statement
• ROLLBACK statement
Please refer to attached file for CBSE Class 12 Informatics Practices More RDBMS Assignment
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CBSE Class 12 Informatics Practices More Rdbms Assignment
We hope you liked the above assignment for More Rdbms 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.
Assignment for Informatics Practices CBSE Class 12 More Rdbms
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More Rdbms Assignment Informatics Practices CBSE Class 12
All questions and their answers for the assignment given above for Class 12 Informatics Practices have been developed as per the latest curriculum and books issued for the current academic year. The students of Class 12 can rest assured that the best teachers have designed the questions of Informatics Practices so that you are able to revise the entire syllabus if you do the assignments. 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.
More Rdbms Assignment CBSE Class 12 Informatics Practices
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CBSE Informatics Practices Class 12 More Rdbms Assignment
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