3.11 Analysis of the architecture of network databases

Content Introduction ..................................................... ........................................................ ....................4 1 Database management systems……………………….……………………….7 1.1 Basic concepts of network database architecture .............................................. 12 1.2 Processing of distributed data……………………………………...15 1.3 Data protection means in the database……….……………………….……......24 2 Architecture of network databases ..............................................29 2.1 Network structures………………………………………………………..31 2.2 Relational structures…………………………………………………….34 2.3 Object-oriented DBMS…………………………………………37 2.4 Types of network databases…………………………………………………….40 3 Designing a network database…………………….………........................43 3.1 SQL database management language……………………………………46 3.2 Security of network databases…………………………………….48 3.3 Use of transaction…….…………………………………... ……….50 Conclusion………………………………………………………………………………53 Glossary………………………………………………………………………………………….. 56 List of sources used………………………………………………………59 List of abbreviations………………………………………………………………………………….62 Appendix A SQL Operators…………………………………………………………..63 Appendix B Structure of a hierarchical and network DBMS…………………………64