Structured Query Language (SQL) Course in Ghaziabad
Structured Query Language(SQL) Course in Ghaziabad from Appletree Infotech will provide the source of information and course of actions to understand SQL database development, maintain database and manage the database with the help of SQL queries. The Structured Query Language(SQL) Course in Ghaziabad started a passionate journey towards SQL mastery.Â
What is Structured Query Language(SQL)
IBM(International Business Machines) invented and developed the Structured Query Language(SQL) in the early 1970s. The Oracle database language is SQL, used for storing and retrieving information in oracle. SQL also serve as a special-purpose programming language because it is also designed to manage data in relational database management system (RDBMS). It is an ANSI Standard, used for accessing, manipulating and retrieving data from the database.
Our Structured Query Language(SQL) Course in Ghaziabad is working with an aim to satisfy the multiple needs for learning like online classes, preparation of interview, and live support to students.
Advantages of Structured Query Language(SQL)
- It is a common language for all relational database.
- Very simple commands for querying, inserting, deleting and modifying the data.
- SQL is a Non-Procedural language because it allows accessing more than one record at a time rather than a single record.
- It is not case sensitive i.e., select and SELECT means same.
- SQL is a popular language because it provides data security and scalability.
- Integration with modern Technologies also.
SQL has various kinds of languages:-
After designing a database and choosing a DBMS to implement the database, Subsequently the first thing to do is to specify conceptual and internal schemas for the database and any mapping between the two.
There are two types of Data Languages:
1. Data Definition Language(DDL): A database scheme is specified by a set of definitions expressed by a special language called Data Definition Language . For instance the SQL defines the “account” table;
Create Table account (account number char(10), balance integer)
2. Data Manipulation Language(DML):Â It is the area of SQL that allow changing data within the database. A DML is a language that enables users to access or manipulate data.Â
Through DML, we can Firstly, insert the new data in the database. Secondly, modify the data that is already stored in the database. Additionally, we can delete the data and retrieve the information from the database whenever needed.Â
Basic Commands of Structured Query Language(SQL)...
Data Manipulation Language(DML)
1.INSERT: Used to insert data into a table.
2.UPDATE: Updates existing data within a table.
3.DELETE: It deletes the records from a database table.
4.SELECT: Used to retrieve data from the database table.
5.MERGE: It combines INSERT, UPDATE and DELETE operation into a single statement based on a specified condition.
Data Definition Language(DDL)
1.CREATE:Â Used to create the database or its objects like table, index functions, views, store procedure and triggers .
2.DROP:Â It to deletes objects from the table.
3.ALTER:Â Used to alter the structure of a database.
4.RENAME: It renames an object, in the database.
5.COMMENT:Â Used to add comments to the data dictionary.
In conclusion the SQL play an important role in modern Data-Driven Organizations because it provides efficient data storage and management of data.
Structured Query Language(SQL) Course in Ghaziabad to learn in offline/online format and get certified from the Best SQL Training institute in Ghaziabad, Appletree Infotech is renowned for providing quality Training at reasonable fees and ensuring placements.
Also have a look at related topics:
   Java
   DBMS
   C programming Language
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