In this modern era, the rapid development of science and technology is certainly very beneficial for human life. However, can also bring threats, such as cyber attacks. One type attack that often used SQL injection, which targets database security. Three tools be in testing injection are sus, ninja, The mole. Testing these three uses two operating systems, Kali Linux Windows. test results measu...

MayBMS [4, 1, 3, 2] is a data management system for incomplete information developed at Saarland University. Its main features are a simple and compact representation system for incomplete information and a language called I-SQL with explicit operations for handling uncertainty. MayBMS is currently an extension of PostgreSQL and manages both complete and incomplete data and evaluates I-SQL quer...

The logic of nulls in databases has been subject of investigation since their introduction in Codd’s Relational Model, which is the foundation of the SQL standard. In the logic based approaches to modelling relational databases proposed so far, nulls are considered as representing unknown values. Such existential semantics fails to capture the behaviour of the SQL standard. We show that, accord...

Deterministic testing of SQL database systems is human intensive and cannot adequately cover the SQL input domain. A system (RAGS), was built to stochastically generate valid SQL statements 1 million times faster than a human and execute them. This paper describes RAGS and the results from turning it lose on several commercial SQL systems. 1. Testing SQL is Hard Good test coverage of commercial...