SQL Tutorial

SQL Transactions

Introduction In this chapter, we will focus on transactions in SQL. Transactions are a fundamental concept in database management systems (DBMS) that ensure the integrity and consistency of data. This chapter will cover the definition, properties, syntax, and provide examples to help you understand how to use transactions effectively. What is a Transaction? A transaction …

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SQL Injection

Introduction In this chapter, we will focus on SQL Injection, a serious security vulnerability that can allow attackers to interfere with the queries an application makes to its database. SQL Injection can lead to unauthorized data access, data manipulation, and other harmful actions. This chapter will cover the definition, examples of SQL Injection, and provide …

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SQL Comments

Introduction In this chapter, we will focus on the use of comments in SQL. Comments are used to annotate your SQL code, making it easier to understand and maintain. This chapter will cover the types of comments, syntax, and provide examples to help you understand how to use comments effectively. What are Comments? Comments are …

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SQL Wildcards

Introduction In this chapter, we will focus on using wildcards in SQL. Wildcards are special characters used in SQL queries to search for data within a table. They are commonly used with the LIKE operator to perform pattern matching. This chapter will cover the definition, syntax, and provide examples to help you understand how to …

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SQL CREATE INDEX

Introduction In this chapter, we will focus on the CREATE INDEX statement in SQL. Indexes are special database objects that can greatly improve the performance of data retrieval operations. This chapter will cover the definition, types, syntax, and provide examples to help you understand how to use the CREATE INDEX statement effectively. What is an …

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SQL Indexes

Introduction In this chapter, we will focus on indexes in SQL. Indexes are special database objects that can greatly improve the performance of data retrieval operations. This chapter will cover the definition, types, syntax, and provide examples to help you understand how to use indexes effectively. What is an Index? An index is a database …

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SQL Joins

Introduction In this chapter, we will learn about SQL Joins, which are used to combine rows from two or more tables based on a related column between them. Joins are fundamental for querying data from multiple tables in relational databases. This chapter will cover different types of joins, their syntax, explanations, and provide examples to …

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