Cbse Class 12 Informatics Practices Practical File
CBSE Class 12 Informatics Practices MySQL (2). 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.Q1. A) Raju wants to change the schema of the table “ STUDENT ” which already exists in the database. Which command he will use.1 b) Neha is not able to enter the details of students born after ‘ 30-Mar-2007’. Which constraint might be specified when the table was created.1 c) What is the purpose of the following query. 1 SELECT COUNT(.) FROM ELECTION GROUP BY city.d) What is the role of UNIQUE constraint? How is PRIMARY KEY constraint differ from UNIQUE key constraint.2 e) What is the significant of ORDER BY command in SQL query.2 f) ActivityName and ParticipantNo of table ACTIVITY given below 2 Activity Name ParticipantNo Relay 100X 4 16 High Jump 10 Shot Put 12 Long Jump 12 Discuss Throw 10 Based on this information, find the output of the following queries.a) SELECT COUNT( DISTINCT ParticipantNo) FROM ACTIVITY;b) SELECT ActivityName FROM ACTIVITY WHERE ActivityName LIKE ‘%p’;'g) A table Employee in a database has a 4 columns and 2 rows in it.
What is cardinality and degree if 3 more columns are added in the table? A)Write an SQL query to create following table ‘ Supplier’ with following descriptions. 2 Table: Supplier Field Type Constraint Suppid Varchar(5) Primary Key SuppName Varchar(20) Not Null City Varchar(20) OrderNo Integer(10) Foreign key with reference to OrderNo column in Order table SuppAmount Decimal(6,2) Minimum 10000 b) In database there are two tables “Student” and “Stream” as below: Table: Student Sid Sname age Strid 1 Roondy 10 1 2 Joseph 12 1 3 Trinchu 14 2 4 Prithlon 11 3 5 Ahol 10 2Please click the link below to download full pdf file for CBSE Class 12 Informatics Practices MySQL (2).
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Informatics Practices subject, which is part of the (India) curriculum, helps in getting acquainted with computer terminologies and operation handling. In this article let us go through what this subject teaches in and the significance of the course. Informatics Practices – OverviewInformatics is a field whereby an informatics executive would be researching new information to help him solve issues pertaining to a diversified field, like medicine, physiology, biology, IT and so on. Now to gather information, one may refer to existing data and at the same time perform a statistical analysis to understand that data in correlation to the data found. Here then comes the techniques which statisticians or mathematicians follow, which we commonly refer to as statistical analysis or data analysis. It helps in gaining working knowledge of a computer system and peripherals.
Also one can understand the application development process by learning the informatics practices. It sharpens one’s programming skills in front-end development. The course further helps in gaining skills in Database Creation and querying using ANSI SQL. To design, program and develop database driven web applications using GUI Programming Tool and RDBMS, this course is indispensable.
Ip Practical File Class 12 Download
Cbse Class 12 Informatics Practices Practical File Download
It aids in understanding and appreciates open source and open standard concepts.CBSE Informatics Practices Class 12 SyllabusThe unit wise marks allocation and updated syllabus for Informatics Practice is given below: Unit one: Networking and open standards. Open Source Concepts: Open Source Software (OSS), common FOSS/FLOSS examples (e.g.