BW Tables MD

8/3/2019 BW Tables MD

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BW Table Types (MD tbl, SID tbl, DIM tbl,

etc)

Attribute tables:

Attribute tbl for Time Independent attributes: /BI*/P<characteristic_name>

stored with characteristic values

Attribute tbl for Time Dependent attributes:

/BI*/Q<characteristic_name>

Fields DATETO & DATEFROM are included in time dependent attribute tbl.

stored with characteristic values

Dimension tables:

Dimension tbls (i.e. DIM tables): /BI*/D<Cube_name><dim.no.>

stores the DIMID, the pointer between fact tbl & master data tbl data is inserted during upload of transact.data (data is never changed, only inserted)

Examples:

o /bic/D(cube name)P is the package dimension of a content cube

o /bic/D(cube name)U is the unit dimension of a content cubeo

/bic/D(cube name)T is the time dimension of a content cubeo /bic/D(cube name)I is the user defined dimension of a content cube

External Hierarchy tables:

/BI*/I*, /BI*/J*, /BI*/H*, /BI*/K*

/BI0/0P... are tables that occur in the course of an optimized preprocessing that contains many

tables.

bic/ H(object name) hierarchy data of object

For more information see Note 514907.

Fact tables:

In SAP BW, there are two fact tables for including transaction data for Basis InfoCubes:the F and the E fact tables.

o /bic/ F(cube name) is the F-fact table of a content cubeo /bic/ E(cube name) is the E-fact table of a content cube



The Fact tbl is the central tbl of the InfoCube. Here key figures (e.g. sales volume) &pointers to the dimension tbls are stored (dim tbls, in turn, point to the SID tbls).

If you upload data into an InfoCube, it is always written into the F-fact table.

If you compress the data, the data is shifted from the F-fact table to the E-fact table.

The F-fact tables for aggregates are always empty, since aggregates are compressed

automatically After a changerun, the F-fact table can have entries as well as when you use the

functionality 'do not compress requests‘ for Aggregates.

E-fact tbl is optimized for Reading => good for Queries

F-fact tbl is optimized for Writing => good for Loads

see Note 631668

Master Data tables

/BI0/P<char_name>

/bic/ M(object name) master data of object

Master data tables are independent of any InfoCube

Master data & master data details (attributes, texts & hierarchies) are stored.

Master data table stores all time independent attributes (display & navigational attribues)

Navigational attributes tables:

SID Attribute table for time independent navigational attributes:

/BI*/X<characteristic_name> SID Attribute tbl for time dependent navigational attributes:

/BI*/Y<characteristic_name>

Nav.attribs can be used for naviagtion purposes (filtering, drill down).

The attribs are not stored as char values but as SIDs (master data IDs).

P table:

P-table only gets filled if you load master data explicitly.

As soon as the SID table is populated, the P tbl is populated as well

SID table:

SID tbl: /BI*/S<characteristic>

stores the char value (eg customer number C95) & the SID. The SID is the pointer that is

used to link the master data tbls & the dimension tbls. The SID is generated during theupload (uniqueness is guaranteed by a number range obj).

Data is inserted during the upload of master data or of transactional data

S table gets filled whenever transaction gets loaded. That means if any new data is there for that

object in the transactions then SID table gets fillled.

Text table:



Text tbl: /BI*/T<characteristic> stores the text for the chars

data is inserted & changed during the upload of text data attribs for the InfoObject

stored either language dependent or independent

Documents

BW Tables MD