Driving Business Value with ILM-Enabled Database Archives – DM Direct
By Jerry Shattner
Use of column-based data compression technology allows for storage of relational data in what is essentially a pre-indexed format, alleviating the requirement for storing or building indexes at restore time. This design significantly reduces the overall storage needed for the database. Column-based storage also significantly improves data compression: being made up of a single data type, each column of data can be compressed much more efficiently than rows of data, which by definition include many different data types. This technology can also further reducing the data footprint by selecting the best optimized compression strategy for each data type.