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RDBMS

DBMS 

Heuristic in Query optimization

August 12, 2020August 12, 2020 Krishna database, Database System, dbms, Heuristic, Heuristic in Query optimization, MySQL, Query Optimization, SQL

Heuristic optimization often includes making transformations to the query tree by moving operators up and down the tree so that

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DBMS 

Query Optimization

August 12, 2020 Krishna database, Database System, dbms, MySQL, Query language, Query Optimization, SQL

Before query optimization is carried out, one would of course need to decide what needs to be optimized. The goal

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DBMS 

Query Processing

August 12, 2020 Krishna database, Database System, dbms, MySQL, Query Processing, SQL

In most database systems, queries are posed in a non-procedural language like SQL and as we have noted earlier such

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DBMS mysql 

Data Manipulation Language in SQL (DML)

August 11, 2020 Krishna Data Manipulation, Data Manipulation Language in SQL (DML), database, Database System, dbms, MySQL, SQL

SQL language also includes syntax to update, insert, and delete records. These query and update commands together form the Data

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DBMS mysql 

Data Definition Language (DDL) in SQL

August 11, 2020 Krishna Data Definition language, Data Definition Language (DDL) in SQL, Database System, dbms, MySQL, SQL

The Data Definition Language (DDL) part of SQL permits database tables to be created or deleted. We can also define

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DBMS mysql 

Characteristics of SQL Commands

August 11, 2020 Krishna Characteristics of SQL, Characteristics of SQL Commands, MySQL, SQL, SQL Commands

Here you can see that SQL commands follow a number of basic rules: • SQL keywords are not normally case

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DBMS mysql SQL Server 

SQL Commands

August 11, 2020 Krishna COMMANDS, Database System, dbms, MySQL, SQL, SQL Commands

There are three groups of commands in SQL: 1. Data Definition 2. Data Manipulation and 3. Transaction Control  

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DBMS mysql 

What is SQL?

August 11, 2020 Krishna Database System, dbms, MySQL, SQL, SQL injection, What is SQL?

Structured Query Language, commonly abbreviated to SQL and pronounced as “sequel”, is not a conventional computer programming language in the

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DBMS 

Developing the Basic Schema

August 11, 2020 Krishna DATA, database, database function developing basic schema, Database System, dbms, Developing the Basic Schema

Once entities and relationships have been identified and defined, the first draft of the entity relationship diagram can be created.

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DBMS 

Data Modeling As Part of Database Design

August 11, 2020 Krishna Data Modeling As Part of Database Design, database, Database Design, dbms, function model

The data model is one part of the conceptual design process. The other is the function model. The data model

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