UNIT 1 BASIC CONCEPTS OF DBMS Q1 CHARACTERISTICS AND BENEFITS OF A DATABASE? Self-Describing Nature of a Database System A Database System contains not only the database itself but also the descriptions of data structure and constraints (meta-data). This information is used by the DBMS software or database users if needed. This separation makes a database system totally different from the traditional file-based system in which the data definition is a part of application programs. Insulation between Program and Data In the file based system, the structure of the data files is defined in the application progra...
FOC UNIT IST 1. A term in computer terminology is a change in technology a computer is/was being used. a) development b) generation c) advancement d) growth View Answer Answer: b 2. The fourth generation was based on integrated circuits. a) True b) False View Answer Answer: b. 3. The generation based on VLSI microprocessor. a) 1st b) 2nd c) 3rd d) 4th View Answer Answer: d Explanation: The 4th gen was VLSI microprocessor based. The period of fourth generation: 4. ______ generation of computer started with using vacuum tubes as the basic components. a) 1st b) 2nd c) 3rd d) 4th View Answer Answer: a 5. Batch processing was mainly used in this generation. a) 1st b) 2nd c) 3rd d) 4th View Answer Answer: a 6. ___________ is an emerging branch in computer science, which interprets means and method of making computers think like human beings. a) Block chain b) VR c) AI d) Cloud computing View Answer ...
Understanding first Java Program: First program in java:- Class simple { public static void main (String args[]) { System.out.println("hello java"); } } Output Hello java Class:- It is a keyword that is used to declare class in java. Public:- It is a keyword that is an access modifier that declare the main method as unprotected and there for making it accessible to all other address. Static:- It is a keyword if we declare any method as static it is known as static method is that there is no need to create object to invoke the static method. The main method is executed by the JVM( Java virtual machine ). Void:- It is a return type of the method between it does not return any value. Main:- It represents start up of the program. String [] args:- It is used for command line arguments. System.out.println ():- It is used to print statement. Way to write java program:- · By changing sequence...
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