Ans: What is Database System? A Database System is a complex and sophisticated system designed to store, manage, and retrieve structured data efficiently. It provides a systematic and organized method of storing data in tables that consist of rows and columns. These systems allow for the definition of data types, relationships among different data items, … 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. Types of cursor Based on their scope and usage Based on their functionality and behavior Detailed Explanation 1. Explicit Cursors Explicit Cursors are declared by programmers in their … 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
Oracle stores the definition of data along with the data. This data definition meant the data about the data i.e. Information about the users, table, columns, concerns, and all objects created in the database. This information is stored in the form of a table which is called a data dictionary. The data dictionary is a … Read more
The various oracle processes are listed and explained below Log Writer Background Process (LGWR): This component writes the redo entries from redo log buffers when the user executes the commit statement or the buffer exceeds 1/3rd of the redo log buffers. Database Writer Background Process(DBWR): This component will write all the dirty blocks whenever checkpoints … Read more