Mr. Celko is author a series of books on SQL and RDBMS for Elsevier/MKP. He is an independent consultant based in Austin, Texas.
He has written over 1200 columns in the computer trade and academic press, mostly dealing with data and databases.
The demand for SQL information and training continues to grow with the need for a database behind every website capable of offering web-based information queries. SQL is the de facto standard for database retrieval, and if you need to access, update, or utilize data in a modern database management system, you will need SQL to do it. The Second Edition of Joe Celko's Trees and Hierarchies in SQL for Smarties covers two new sets of extensions over three entirely new chapters and expounds upon the changes that have occurred in SQL standards since the previous edition's publication. Benefit from mastering the challenging aspects of these database applications in SQL as taught by Joe Celko, one of the most-read SQL authors in the world.
1. Graphs, Trees and Hierarchies 2. Adjacency List Model 3. Path Enumeration Models 4. Nested Set Model of Hierarchies 5. Frequent Insertion Trees 6. The Linear Version of the Nested Sets model 7. Binary Trees 8. Other Models for Trees 9. Proprietary Extensions for Trees 10. Hierarchies in Data Modelling 11. Hierarchical Encoding Schemes 12. General Graphs 13. Petri Nets 14. State Transition Graphs 15. Hierarchical Database Systems (IMS)