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Write short notes on relational model
The relational model uses a collection of tables to show both data and the relationships between those data. The relational model is an example of a record based model.
This project requires you to create a database design. Your design will be documented in a set of Entity-Relationship diagrams. Draw a set of Entity-Relationship diagrams to mode
In an organization several projects are undertaken. Each project can employ one or more employees. Each employee can work on one or more projects. Each project is undertaken on the
Explain how the associations are implemented as classes. A general approach in this case is to transform an association class into a simple class linked to two original classes
What Is Recovery? During the life of a transaction, i.e., a after the start of a transaction but before the transaction commits, various changes may be made in a database state
What is a primary index? A primary index is an index whose search key also explains the sequential order of the file.
why are older data models are being replaced by new data models
Write short notes on relational model The relational model uses a collection of tables to show both data and the relationships between those data. The relational mo
Construct a clean ans concise ER diagram for the database indicating the cardinality mapping for Employee management syatem
What is data block? Data Block - In oracle the data blocks are referred to as tablespaces. A tablespace is an fields of disk consisting of one or more disk files. A tablespace
What is the max. no. Of structures that can be included in a table or structure. Nine.
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