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Computer Subject / DBMS

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Data Definition and Control (DDL + DCL + TCL) Interview Questions - SQL

Last Updated: 02 September 2025

Data Definition and Control (DDL, DCL, TCL) in SQL deals with structuring, securing, and managing transactions in a database. DDL defines objects (CREATE, ALTER, DROP), DC...read more

Storage, Indexing & Advanced Topics Interview Questions - DBMS

Last Updated: 30 August 2025

Storage in DBMS is about how data is physically stored and managed on disk. Indexing is a technique to make data retrieval faster, like a book’s index. Advanced topics inc...read more

Transactions, Concurrency & Recovery Interview Questions - DBMS

Last Updated: 30 August 2025

Transactions ensure reliable and atomic operations in a database, even with multiple users accessing data concurrently. Concurrency control techniques prevent conflicts an...read more

DBMS-Transactions and Concurrency Control

How to Choose a Database Management System

Last Updated: 19 July 2025

In any system built on a Database Management System (DBMS), selecting the right database is a key architectural decision. It influences data consistency, performance, scal...read more

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DBMS-Relational Model

Computer Science and Engineering

HOLAP (Hybrid OLAP)

Last Updated: 19 July 2025

Hybrid OLAP (HOLAP) combines the best of MOLAP and ROLAP. It stores summary data in multidimensional cubes for fast queries and keeps detailed data in relational databases...read more

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Last Updated: 23 July 2025

Discretization is the process of converting continuous data or numerical values into discrete categories or bins. This technique is often used in data analysis and machine...read more

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ROLAP (Relational OLAP)

Last Updated: 18 August 2025

Relational OLAP (ROLAP) uses relational databases for multidimensional analysis. Instead of storing pre-aggregated cubes (as in MOLAP), it generates results dynamically wi...read more

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Difference between Data Mart, Data Lake, and Data Warehouse

Last Updated: 23 July 2025

A Data Mart, Data Lake, and Data Warehouse are all used for storing and analyzing data, but they serve different purposes. A Data Warehouse stores structured, processed da...read more

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MOLAP (Multidimensional OLAP)

Last Updated: 19 July 2025

Multidimensional OLAP (MOLAP) is a fast and efficient data analysis technology that stores data in pre-aggregated multidimensional cubes. These cubes allow quick access to...read more

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RDBMS Benefits and Limitations

Last Updated: 23 July 2025

RDBMS (Relational Database Management Systems) are widely recognized as a key solution for efficiently storing, managing, and retrieving large amounts of data. Relational ...read more

Data Warehousing Tutorial

Last Updated: 31 July 2025

Data warehousing refers to the process of collecting, storing, and managing data from different sources in a centralized repository. It allows businesses to analyze histor...read more

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Computer Science and Engineering

Last Minute Notes (LMNs) - Data Warehousing

Last Updated: 24 January 2025

A Data Warehouse (DW) is a centralized system that stores large amounts of structured data from various sources, optimized for analysis, reporting, and decision-making. Un...read more

Super Key in DBMS

Last Updated: 23 July 2025

Keys in DBMS play an important role in maintaining the integrity and uniqueness of data. Among these, the super key is one of the fundamental concept. It helps in designin...read more

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DBMS-Normalization

Databases (DBMS) for GATE Exam

Last Updated: 23 July 2025

Here's a complete tutorial on Database Management System (DBMS) for the GATE CSE exam. Whether you're revising or starting fresh, this tutorial will help you prepare effec...read more

Batch Apex in Salesforce | Managing Large Data Volumes

Last Updated: 23 December 2024

Salesforce is a robust platform designed to streamline business processes and manage customer relationships effectively. One of its key features is Batch Apex, a mechanism...read more

Salesforce 2025

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