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This framework is used to describe the structure of a specific database system. The three schema architecture is also used to separate the user applications and physical database. The three schema architecture contains three-levels. It breaks the database down into three different categories. It shows the DBMS architecture.What are the best color schemes for architectural design?
In an analogous color scheme, be sure to have enough contrast by choosing one color to dominate, a second to support, with the third color as black, white, or grey as an accent. An example is shown here. Most popular architectural design portfolios, in terms of layout and best overall presentation of color schemes, include the following:What is the use of internal schema?
The internal schema is also known as a physical schema. It uses the physical data model. It is used to define that how the data will be stored in a block. The physical level is used to describe complex low-level data structures in detail.What is the difference between a view schema and subschema?
The subschema is used to describe the different view of the database. An external schema is also known as view schema. Each view schema describes the database part that a particular user group is interested and hides the remaining database from that user group. The view schema describes the end user interaction with database systems.