Essbase - Aggregate Storage

About

Essbase provides an aggregate storage kernel as a persistence mechanism for multidimensional databases.

Aggregate storage database are optimized for sparse data set that primarily require simple aggregation. Any non-aggregation calculations are performed dynamically when requested in reports.

Incremental loading and fast aggregation can provide near real-time analysis of transactional data.

Aggregate storage databases enable dramatic improvements in both :

  • database aggregation time
  • and dimensional scalability.

The aggregate storage kernel is an alternative to the block storage kernel. Aggregate storage databases typically address read-only, “rack and stack” applications that have large dimensionality, such as the following Business Intelligence Application :

  • Customer analysis. Data is analyzed from any dimension, and there are potentially millions of customers.
  • Procurement analysis. Many products are tracked across many vendors.
  • Logistics analysis. Near real-time updates of product shipments are provided.

Aggregate storage and block storage differ in concept and design. Some block storage outline features do not apply to aggregate storage. For example, the concept of dense and sparse dimensions does not apply.

Differences

The differences are visible in this domain :

  • Inherent
  • Outline
  • Calculation
  • Partitioning
  • Data Load
  • Query
  • Feature
Business Application Properties Storage
Customer Analysis Many dimensions, million of customer Aggregate
Sales Forecasting Top-down planning and allocations Block
Procurement Analysis Many products across many customers Aggregate
Profitability Analysis Cost Allocations across products and customers Block
Logistics Analysis Near real-time information on product shipments Aggregate
Financial consolidations Currency conversion, inter-company eliminations Block

See Comparison of Aggregate and Block Storage

Documentation / Reference


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