Sunday, December 3, 2023

DBMS – Concurrency Control ,Prevention or Avoidance

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Deadlock is a situation in a database management system (DBMS) where two or more transactions are waiting for resources held by each other, resulting in a state where no transaction can...

DBMS – Concurrency Control

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DBMS - Concurrency Control Concurrency control is a critical aspect of database management systems (DBMS) that ensures the correct and consistent execution of multiple transactions simultaneously. It is the process of managing...

DBMS – Transaction, Serializability, Equivalence Schedules, States of Transactions

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A transaction in a database management system (DBMS) is a logical unit of work that represents a sequence of operations that must be executed as a single, indivisible unit. The main...

Normalization in DBMS

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Normalization is a process of organizing the data in a relational database to reduce redundancy and improve data consistency. The goal of normalization is to eliminate data redundancy by breaking down...

Functional Dependency

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Functional Dependency (FD) is a concept in relational database design that describes the relationship between two attributes in a table. In simple terms, it specifies that the value of one attribute...

Relational calculus

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Relational calculus is a non-procedural query language used to retrieve data from relational databases. It is based on mathematical logic and set theory, and uses formulas and expressions to specify the...

Join Operations

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Join operation is one of the fundamental operations in Relational Algebra used to combine two or more relations based on a common attribute or set of attributes. The resulting relation contains...

Relational Algebra

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Relational Algebra is a procedural query language used in database management systems (DBMS) to retrieve data from relational databases. It is a set of mathematical operators that manipulate the data stored...

Relational Model in DBMS

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The relational model is a fundamental concept in database management systems (DBMS). It is a way of organizing and manipulating data by representing it as tables with rows and columns. Each...

Keys in DBMS

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A key in a DBMS (Database Management System) is a field or set of fields that uniquely identifies a record (row) in a table. Keys are used to enforce data integrity,...

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