CBSE Class 12 Informatics Practices Sample Paper 2012 Set 02 Solved

Informatics Practices
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Q 1. Answer the following questions: 

(a) Expand the following abbreviations: 

i) OSS 

ii) GNU

iii) W3C 

iv) FOSS 

(b) Compare Front end and Back end with respect to software. 

( c) Give one example to show how Data Mining is useful. 

(d) Write the purpose of feasibility study conducted during System Development Life Cycle. 

(e) Identify the type of relationship represented by the following statements and draw an entity relationship diagram to show it."Each item must have one and only one price. Each price may be for more than one item" 


Q2 Answer the following questions: 

(a) Write names of any two popular Relational Database Management Systems. 

(b) Define SQL. List three subcategories of SQL commands giving one example of command in each category. 

(c) Distinguish between Decision Control and Looping Control Structure giving one example each of commands provided by PL/SQL for both these types of control structures. 


Q3 Answer the following questions: 

(a) What is an Event? Name an Event Driven programming language. 

(b) Differentiate using a suitable example, between MsgBox () and InputBox () functions in Visual Basic. 

(c) Differentiate between ADODB project reference and ADO DC in a form using suitable Example

 

Section - B
 
Q4 Read the following case study and answer the questions that follow:
 
Mr Nath of Quick Solution Software Corporation has got requirement of a Software Project from a Customer in Tours and Travel Business. He performed the preliminary analysis and found that software Application should be based on Client/Server technology. He opted for Visual Basic Language to develop the front end. Given below is one of the forms to enquire about railway reservation. Carefully observe the following picture.

CBSE Class 12 Informatics Practices Sample Paper 2012 (2) 1

 
The List for the above form is as follows

CBSE Class 12 Informatics Practices Sample Paper 2012 (2) 2

(a) Write the value for the Caption property of the Object cmdCheckStatus. 
 
(b) Write the code snippet for cmdCloseMe Command Button if it is required to close the form on its Click event. 
 
(c) Write a code snippet so that the user can enter only number in the DD field. 
 
(d) Write a procedure to check for the validity of the entered date value. Clear the text boxes for invalid date value and set the focus on txtDD.



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Post-Practice Strategy for Class 12 Informatics Practices

  1. Self-Evaluation: Score your answers using official guidance to track your academic progress.
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  3. Continuous Practice: Take additional Informatics Practices sample modules online to maximize preparedness for CBSE evaluations.

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