03-SQL Injection ParteI [Modo de Compatibilidade]
Advanced SQL Injection
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Copyright ? The OWASP Foundation Permission is granted to copy, distribute and/or modify this document under the terms of the OWASP License.
The OWASP Foundation
What is SQL?
SQL stands for Structured Query Language Allows us to access a database ANSI and ISO standard computer language
The most current standard is SQL99
SQL can:
execute queries against a database retrieve data from a database insert new records in a database delete records from a database update records in a database
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SQL is a Standard - but...
There are many different versions of the SQL language They support the same major keywords in a similar manner (such as SELECT, UPDATE, DELETE, INSERT, WHERE, and others). Most of the SQL database programs also have their own proprietary extensions in addition to the SQL standard!
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SQL Database Tables
A relational database contains one or more tables identified each by a name
Tables contain records (rows) with data
For example, the following table is called "users" and contains data distributed in rows and columns:
userID
1 2 3
Name
John Adam Daniel
LastName
Smith Taylor Thompson
Login
jsmith adamt dthompson
Password
hello qwerty dthompson
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SQL Queries
With SQL, we can query a database and have a result set returned Using the previous table, a query like this:
SELECT LastName FROM users WHERE UserID = 1;
Gives a result set like this:
LastName -------------Smith
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