Star schema

Figure 9.16. Star schema design of a chemical data warehouse. The central source table allows access to the Extemal-IDof every molecule, arranged by source database. These External-ID values can be used to build multidimensional views of the data. For example, to see all the reactions with products that can be found in source database ACD, one would combine data from the source dictionary table (Source ID for database ACD), the reactions table (StructJD, and Role), and moltable (Struct ID) table, using identifiers (Extemal-ID)from the central source table.

Star Schema. A standard data warehouse architecture, characterized by Ralph Kimball, in which a central "fact" table is connected to various "dimension" tables. 

Snowflake schema Similar to a star schema but with larger dimensional tables that have been de-normalized into sets of smaller tables. 

Star schema A database design, often used to improve OLAP performance, that features a central fact table linked to associated dimensional tables by way of surrogate keys. 

Scrubbing / Trtmsformadon Star Schema The processes of altering data from its original form into a format suitable for business analysis by nontechniced staff. A method of database design used by relational databases to model multidimensional data. A star schema usually contains two types of tables fact and dimension. The fact table conteiins the measurement data, e.g., the salary paid, vacation earned, etc. The dimensions hold descriptive data, e.g., ntune, address, etc. 

Standing work postures, 1357, 1358 Stanford Research Institute, 238 Star schema, 85... 

Finally, data is stored in the underlying database. Subsequent Data Analysis is primarily conducted by the OLAP methodology, thus the database schema has been defined following a star schema approach, by a semantic classification, data has to be classified among ... 

Consequence and solution Women s inadequate access to information and public notice. As a result of gender schemas that portray women as less professionally competent and ambitious than men, women end up with less information and less public notice than do men. Compared to men, women have less access to informal routes of information and are less likely to be given opportunities by their superiors to receive public notice. For example, a recent study of the Johns Hopkins University Department of Medicine within the School of Medicine demonstrated that senior faculty were six times as likely to suggest names of junior male faculty rather than female faculty to chair conference sessions. Qualified junior women were also less likely to be identified as candidates for promotion compared with qualified junior men.23 Thus, women are not as likely to be identified as star material, and as their careers continue they become less and less likely to be perceived as important scientific contributors to their field. 

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