CBSE Class 12 Informatics Practices Sample Paper 2012 (1)

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CBSE Class 12 Informatics Practices Sample Paper 2012 (1). CBSE issues sample papers every year for students for class 12 board exams. Students should solve the CBSE issued sample papers to understand the pattern of the question paper which will come in class 12 board exams this year. The sample papers have been provided with marking scheme. It’s always recommended to practice as many CBSE sample papers as possible before the board examinations. Sample papers should be always practiced in examination condition at home or school and the student should show the answers to teachers for checking or compare with the answers provided. Students can download the sample papers in pdf format free and score better marks in examinations. Refer to other links too for latest sample papers.

Section - A

Q 1. Answer the following questions

(a) Distinguish between open source software and proprietary software with respect to initial software license cost.

(b) Write the purpose of the following software:

i) Mozilla FireFox ii) PHP

(c) Differentiate between ER Modeling and Object Modeling Techniques .

(d) How is Datawarehouse useful to an organization?

(e) Name two areas in industries where business computing can be applied.

Q2 Answer the following questions:

(a) State the difference between SQL and PL/SQL.

(b) Differentiate between Cursors and Triggers.

(c) How is Database fragmentation related to Distributed databases?

(d) What are PL/SQL blocks? How many types of PL/SQL block definition exist? Explain with suitable examples.

Q3 Answer the following questions:

(a) How do we specify comments in Visual basic? How do we break a long line of code to a new line?

(b) Write the steps in Program Solving Methodology. Give a suitable example showing use of Problem Solving Methodology.

(c) Explain the following Terms

(i) Modular Programming

(ii) Object Oriented Programming

(iii) Event Driven Programming

(iv) RAD

Please click the link below to download full pdf file for CBSE Class 12 Informatics Practices Sample Paper 2012 (1).


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