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Is Read Consistency Rollback segments a feature of Oracle products or a general feature of RDBMS?
Same question but this time regarding Storing/Tablespaces?
Lastly are blocks, extents and segments a feature of Oracle or databases in general?
Many thanks in advance to your replies!
Read consistency is an attribute (from my perspective a requirement) of a transactional database.
Rollback segments are (in a nutshell) how Oracle supports transactions. Btw. it’s not called rollback segement any longer. It’s called UNDO nowadays
Tablespaces are nothing unique to Oracle. Most (if not all) large scale DBMS support that.
All DBMS I know access the filesystem by blocks. A block (sometimes called a page) is usually the smallest (storage) unit a DBMS can read or write.
Extents are nothing unique to Oracle. Other DBMS just have different names for that.
Segments is a name I have only come across in the Oracle world. But I guess the concept exists in any major DBMS in some way or the other.