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How are the internal external and conceptual schemas related to concept of logical and physical data independence?
The internal schema represents the physical storage structure of data, the external schema represents how different users view the data, and the conceptual schema defines the logical structure of the entire database. Logical data independence means that the conceptual schema can change without affecting the external schemas, while physical data independence means that changes in the physical storage structures do not affect the conceptual or external schemas.
Why is schema important to learning?
Schema is important to learning because it helps individuals organize and interpret new information based on their existing knowledge and experiences. It provides a framework for understanding and processing new information, making it easier for learners to make connections and retain knowledge. By activating and building on existing schema, individuals can enhance their learning and make new information more meaningful and memorable.
What is a schema describes?
A schema describes the structure and organization of a database. It defines the tables, attributes, relationships, constraints, and data types that make up the database. It is like a blueprint that ensures data integrity and consistency.
The belief that boys are more independent than girls is?
a gender stereotype that is not based on evidence. Independence is a trait that can be found in individuals of any gender and can vary based on personality and other factors, not simply on gender. Encouraging both boys and girls to develop independence and self-reliance is important for their overall growth and development.
What are names for independent thinker?
Maverick, freethinker, nonconformist, individualist.
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.
What is schema and sub-schema?
The schema is the physical arrangement of the data as it appears in the DBMS. The subschema is the logical view of the data as it appears to the application program.
What is difference between Schema and Subschema?
SCHEMA is the physical arrangement of the data as it appears in the DBMS. SUB-SCHEMA is the logical view of the data as it appears to the application program.
Why should a sub schema be independent of schema?
I do not do not sens me something today
What data is independent?
Data independence is the ability to change the schema at one level of the database system without having to change the schema at the other levels.
Create a schema for banking system?
Yes you should create a schema for any IT project. A schema will provide a road map for the entire project.
Description of database subschema?
What are the purpose of developing a sub-schema in database? In database management, the Subschema pronounced "sub-skee-mah." is an individual user's partial view of the database while the schema is the entire database. It is the applications programmer's view of the data within the database pertinent to the specific application. A subschema has access to those areas, set types, record types, data items, and data aggregates of interest in the pertinent application to which it was designed. Naturally, a software system usually has more than one programmer assigned and includes more than one application. This means there are usually many different sub schemas for each schema. The following are a few of the many reasons sub schemas are used: # Sub schemas provide different views of the data to the user and the programmer, who do not need to know all the data contained in the entire database. # Sub schemas enhance security factors and prohibit data compromise. # Sub schemas aid the DBA while assuring data integrity. Each data item included in the subschema will be assigned a location in the user working area (UWA). The UWA is conceptually a loading and unloading zone, where all data provided by the DBMS in response to a CALL for data is delivered. It is also where all data to be picked up by the DBMS must be placed.
What is system bank schema?
A bank schema system has columns and rows representing the system memory sockets. Independent sockets are shown in rows and banks of sockets are shown in columns. It is a way to diagram memory configurations.
What describes only the portion of a database available to a particular user?
Subschema
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
What if your idea of what a graduation party should include is called a?
It is called a schema.
Explain the three schema architecture of DBMS?
Physical schema,logical schema and sub schemas
