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Having said that, we are providing free chapter-wise NCERT solutions for class 10 Foundation of Technology textbook to help students prepare well and be confident to write the board exams. The solutions that we are offering here mainly deal with all the basic as well as advance concepts of class 10 computer science. These NCERT solutions further come with a wide variety of questions asked in CBSE exams and the solutions also contain detailed explanations as well as answers that will enable students to increase the conceptual strength of the subject.
With our solutions, students will fully understand what to study for the exam and they can, therefore, rank higher in their upcoming examination. Besides, using these solutions will allow students to stay ahead in the class as they will be fully prepared to tackle any type of question that can be asked in the class test or the exams.
Question 7. State the primary goal of a DBMS. Answer: To provide a convenient and efficient environment in which we can store and retrieve information. Question 8. Write any two uses of database management system. CBSE Answer:. Question 9. Give any two disadvantages of the database.
Question Write any two advantages of using database. What is a primary key? Give one advantage of using primary key. Answer: A primary key uniquely identifies the record in the table. What is the significance of a primary key? Answer: A primary key cannot allow null values and must have a unique index.
Name two possible primary keys for an Employee table. Write the significance of a foreign key. What is the default extension of OO. What are the main purposes of a database system? How are fields, record and a table related to each other? Explain with the help of an example. A record contains logically related fields. A table Emp name contains logically related records. Here EmpNo, Name and Salary are three different fields.
A row stores complete information of a record whereas column stores only similar data values for all records. Distinguish between data and information. Define query in the context of database. These statements give you filtered data according to your conditions and specifications indicating the fields, records and summaries which a user wants to fetch from a database.
Define forms and what is the need of using them? CBSE Answer: In a database, a form is a window or a screen that contains numerous fields or spaces to enter data. Forms can be used to view and edit your data. It is an interface in user specified layout. People generally prefer to enter data into a well-designed form, rather than a table.
What do you understand by report? Answer: When you want to print those records which are fetched from your database, design a report. It is an effective way to present data in a printed format.
It allows you to represent data retrieved from one or more tables, so that it can be analysed. What do you mean by DBMS? CBSE Answer: It is a collection of programs that enables users to create, maintain database and control all the access to the database. DBMS is a software package that manages database, e. DBMS is actually a tool that is used to perform any kind of operation on data in database.
Relational databases are powerful, so they require few assumptions about how data is related or how, it will be extracted from the database. A table named School containing data of students of the whole school is created, where each record consists of several fields including AdmissionNo Admission Number , RollNo Roll Number , Name.
Which field out of these three should be set as the primary key and why? CBSE Answer: AdmissionNo should be set as primary key because admission numbers are unique for each and every students of the school, which is not possible in the case with RollNo and Name.
What is the utility of primary key in database? Write distinct features of primary keys. It can be a column or a set of columns in the table. Main features of primary key are as follows:. Long Answer Type Questions [5 Marks each]. Discuss the components of a database. Answer: A database consists of several components. Each component plays an important role in the database system environment. The major components of database are as follows:.
Define database management system. Write two advantages of using database management system for school. The primary goal of the DBMS is to provide an environment that is both convenient and efficient for user to retrieve and store information. Distinguish between a record and a field in a table, with an example. Write the steps to design a database. Answer: Steps to Design a Database There are various steps to design a database which are as follows:.
Consider the following table. Sanchita is working for a nationalised bank and is in the process of creating a table to store the details of customers of the bank. Find out, which of the following fields of table Bank can be selected as primary key, candidate key and alternate key?
Consider the following database Student. The director of a company uses a database to store data about job title. This is a part of the database given below. Identify the columns out of the given three, which should not be present in each of the following tables: Answer: i DateofBirth ii Admno iii Phonenumber.
Multiple Choice Questions [1 Mark each]. Facilities offered by databases are a The ability to store a large amount of data in a structured format, easy update, sort query, production of reports.
Which of the following is not an example of database? CBSE a Cross knot game b Employee payroll management c Numeric calculator d Customer management system Answer: c Numeric calculator because it is used to calculate the numeric numbers only as it is unable to store data.
Database is a combination of CBSE a hardware and software b hardware and operating system c software and operating system d utility programs Answer: a A database consists of several components. These are data, software, hardware and user. Database is made up of all the following components except a tables b queries c forms d formula bar Answer: d Database is made up of tables, queries and forms. We will tell you the exact method of how you can download this book.
We will also give you direct links to download the book in pdf format. The book will be according to the new syllabus for the academic year In the present age information and technology plays an important role in every field. This is for class 9 and 10 both. With the help of these courses, students are prepared for progressive learning.
The book has been written in an easy language. The language of the book is simple enough to be understood by the 9th and 10th class students. The book is the only genuine source of learning this subject. This book comes with pictorial illustrations and tables. This makes learning easy and interesting. The book is written by competent authors. We have also prepared short notes for this subject if you need these notes. You can leave a comment in the box below.
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