secret...know it yourself
Something that will have a link/relationship to something else. For example: The relationship between the speed of a car, and the angle of a hill is: The steeper the hill, the faster the car will go.
Tables are the basic building blocks of a relational database.
They just are
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secret...know it yourself
The Entity-Relationship diagram is the most helpful in designing a relational database to store object data. It visually represents entities, their attributes, and the relationships between them, providing a clear understanding of the database structure and enabling effective planning of tables and relationships.
An isothermal PV diagram illustrates a thermodynamic process where the temperature remains constant.
In the T-S diagram for incompressible fluid flow, the specific volume remains constant, resulting in vertical lines on the diagram. The process line in the T-S diagram would be a vertical line, parallel to the entropy axis. This is because the entropy remains constant for incompressible flow.
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Line of constant pressure shown on the surface pressure diagram are called isobars. Isobars show areas of high pressure and areas of low pressure. The surface pressure diagram can be used to predict weather patterns.
Two standard ways to document a database are to create a relational diagram and a data dictionary.A relational diagram will display all the tables in a database with links to joining tables utilizing the primary and foreign keys. For a more detailed description visit- http://www.utexas.edu/its/windows/database/datamodeling/dm/erintro.htmlA data dictionary is a reference guide of all the tables and fields in a database and the use of each object.
What is the utility of relational algebra relational calculas name some software's based on these concept?"
Relational Investors was created in 1996.
Oracle is relational DataBase
Something that will have a link/relationship to something else. For example: The relationship between the speed of a car, and the angle of a hill is: The steeper the hill, the faster the car will go.
Relational Algebra - Example