Instance Storing data collection in a database at a particular moment in time is called an instance. The word instance is used to describe the entire database environment that includes DBMS software, data in tabular form, and other logical functionality. We can also define it as where data is stored in a manageable manner. The … Read more
Data redundancy is a situation in which there are multiple copies of the same data stored at different places in the database. For example: When a customer came to a shop to buy something, and shop owner notes down the list of item every time and generate a bill for each product. Then this is … Read more
Ans: The difference between the database system and file system are as follows: Sl no. Database management system File management system 1. A DBMS is a collection of data. It does not require users to write procedures. A file system is a collection of data. In this, users need to write procedures. 2. It is … Read more
A file system is a traditional way for the collection of data and a system that is used to manage data in our system. When there is no word like “database management system (D.B.M.S)”, people use file management systems to store their data. In the file system, we face lots of issues such as searching, … Read more
Database management system is the software and collection of the program which is used to create, manipulate, retrieve and delete databases. DBMS is a system that has a collection of operations that helps users to perform operations like (Updation, Insertion, Deletion, etc.) in an easy way within the database. It provides easiness to the users. … Read more
Advantages and Disadvantages Of Database Management System (DBMS) are Advantages of Database Management System (DBMS) Disadvantages of Database Management System (DBMS)
Ans: Before the database management system, we should know about the data and the database. There are two very confusing terms. DATA and INFORMATION. The difference between data and information is as follows: Data: Data is the raw and isolated facts about an entity or record. For example text, audio, image, map, etc.Information: Information is … Read more
The oracle database is a centralized repository where data is stored. The Oracle database has a physical structure that is visible to the operating system and is made up of the Operating system’s files and logical structure that is recognized by the oracle server. The user while requesting any request any information from oracle database, … Read more
A cursor is a working area where an SQL statement is executed. It is used to process individual rows returned by the database system for a query. There are two types of cursor Implicit cursor: It is a predefined cursor that is associated with DML hence the declaration is not required in this cursor. Some … Read more
PL/SQL stands for procedural Structures query language which is an extension of the structural query language (SQL) and oracle relation database. It is independent of the operating system environment and tightly integrated with SQL. It provides extensive error checking, numerous data types, and a variety of programming structures. It also supports structural programming through the … Read more