http://qatestlab.com/ A software testing company distinguishes 3 patterns of handling software concurrency issues. They are: pessimistic pattern of concurrency control, optimistic pattern of concurrency control and pattern with no control of concurrency issues.
Contents: 1. Introduction to Database Management Systems 2. Database Design and Normalization 3. Relational Algebra & Relational Calculus 4. Query Languages-SQL 5. Internal Structure and Organization of Data 6. Transaction Processing 7. Concurrency Control and Recovery P. Paper
http://qatestlab.com/ Many modern software products have to work simultaneously with many users accessing the same data. It is known that various patterns of solving application concurrency issues are used nowadays. Each of the patterns has its special features.