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What is star flake schema?
A starflake schema is a combination of a star schema and a snowflake schema. Starflake schemas are snowflake schemas where only some of the dimension tables have been denormalized. hardkingofflirt@gmail.com
Difference between star flake schema and star schema?
STAR SCHEMA ::contains dimension tables mapped around a fact table. it is a de normalised model.no need to use complicated joins.queries results fastly. @ahsan_ravian@hotmail.com
What are the Types of database schema architecture?
The Star & Snowflake are two common type of database Schema.
What is starflake schemas?
starflake schema: A hybrid structure that contains a mixture of star and snowflake schema's.
What is schema object of database?
We know that schema in the database is refer to the basic design of that database and is stored in an object . That object is known as schema object of database.
What do you mean by Schema in DBMS?
overall design of the database
What is Schema and instances?
In DBMS,Schema is the overall Design of the Database.Instance is the information stored in the Database at a particular moment.In programming,you declare a variable which corresponds to "Schema".But its values changes as and when required which corresponds to "Instance". Google about levels of Database Abstraction. Physical Schema describes database design at physical level while a logical schema describes the database design at the logical level.A database may also have several schemas at the view level, sometimes called subschemas, that describe different views of the database.
What is schema instance?
In DBMS,Schema is the overall Design of the Database.Instance is the information stored in the Database at a particular moment.In programming,you declare a variable which corresponds to "Schema".But its values changes as and when required which corresponds to "Instance". Google about levels of Database Abstraction. Physical Schema describes database design at physical level while a logical schema describes the database design at the logical level.A database may also have several schemas at the view level, sometimes called subschemas, that describe different views of the database.
Why subschema is independent of schema?
A subschema is a subset of a larger schema, and it is designed to be independent and self-contained. It can exist and operate separately from the larger schema, providing specific functionality or representing a specific component of the overall schema. This independence allows for modular design and development, making it easier to manage and maintain the schema as a whole.
Administration of Active Directory schema and design?
From active directory schema snap-in.But before that you have to register the schmmgmt.dll file by using regsvr32.exeschmmgmt.dll @ cmd prompt
What schemas do you use in Multidimensional Modelling?
In Multidimensional Modelling, common schemas used are Star Schema and Snowflake Schema. Star Schema involves a central fact table connected to multiple dimension tables, while Snowflake Schema normalizes the dimension tables by further breaking them down into sub-dimension tables. These schemas help organize data hierarchically for efficient querying and analysis in multidimensional databases.
What is the meaning of normalized data in data warehouse?
Data warehouses are designed for quick access to large amounts of historical data. Read operations dominate over write operations. Under these conditions, normalization takes a back seat to performance optimization. A different design methodology, called dimensional design is used when planning a data warehouse. There are two common categories of schemas used in data warehousing: star schemas and snow flake schemas. A star schema has a central fact table, surrounded by dimension tables. The fact table contains columns called measures, which are aggregated in queries. The fact table is related to the dimension tables. The dimension tables may have levels, which are implemented as columns. For example, a dimension table named Location may contain columns for Continent, Country, StateProvince and City. This dimension table is not normalized. If you normalize the dimension tables, then each level is placed in its own table. Normalizing the dimension tables results in a snow flake schema.
