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RDBMS using SQLite Unit 1: Understanding Data

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RDBMS using SQLite Unit 1: Understanding Data

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Questions and Answers

What is data?

Data is a collection of distinct small units of information.

Where does the word 'Data' originate from?

The word 'Data' originates from the word 'datum,' which means 'single piece of information.'

What is a Database Management System (DBMS)?

A DBMS is system software for creating and managing databases.

What is the purpose of a Database Management System?

The purpose of a DBMS is to enable users to create and maintain a database for various applications. Signup and view all the answers

In computing, how is data defined?

In computing, data is defined as information that can be translated into a form for efficient movement and processing. Signup and view all the answers

What role does a DBMS serve in relation to databases and users/application programs?

The DBMS serves as an interface between databases and users or application programs, ensuring that data is consistently organized and remains easily accessible. Signup and view all the answers

What are the main disadvantages of DBMS in File Processing?

Data redundancy and inconsistency, Difficult in accessing data, Data isolation, Data integrity, Concurrent access is not possible, Security Problems Signup and view all the answers

What are the advantages of DBMS?

Data Independence, Efficient Data Access, Data Integrity and security, Data administration, Concurrent access and Crash recovery, Reduced Application Development Time Signup and view all the answers

In which fields do the main Database Applications lie?

Banking, Airlines, Universities, Sales, Online retailers, Manufacturing, Human resources Signup and view all the answers

What are the components of a DBMS?

Query processor, Run time database manager Signup and view all the answers

What does the query processor do?

Transforms user queries into a series of low-level instructions, Interprets the online user’s query, Converts it into an efficient series of operations in a form capable of being sent to the run time data manager for execution Signup and view all the answers

What is the role of the run time database manager?

It interfaces with user-submitted application programs and queries, Handles database access at run time, Converts operations in user’s queries from the user’s logical view to a physical file system, Accepts queries and examines the external and conceptual schemas to determine what conceptual records are required to satisfy the user’s request Signup and view all the answers

What are the main fields where database applications are utilized?

Banking, Airlines, Universities, Sales, Online retailers, Manufacturing, Human resources Signup and view all the answers

What are the main problems that the database system must ensure the safety of the information stored?

System crashes, Unauthorized access Signup and view all the answers

What are the main database applications in the field of Human resources?

Employee records, Salaries, Tax deductions Signup and view all the answers

What are the main concepts and techniques developed for managing data?

Data Independence, Efficient Data Access, Data Integrity and security, Data administration, Concurrent access, Crash recovery, Reduced Application Development Time Signup and view all the answers