What is a Clustered Index table?
I may be wrong, but it seems to be different opinions in the interwebs about what these are. SQL Server, MySQL, DB2, and PostgreSQL show different definitions for these tables. After reading a ton from different vendors (database manuals, user posts, etc.) I was able to distinguish three types of tables of interest (there are many, many more types of no interest for this question). Please bear with me: Heap Table : All rows are stored (probably unordered) in the heap table. Each row has an internal ROWID that identifies it. Indexes are optional. If added, they include the indexed columns as