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external and internal mapping with examples
Load sample data into the database tables design and test queries to return the following information • All rows and columns for employees • All rows and columns for customers •
Create an entity relationship diagram, Database Management System
Serialisability: Any schedule that makes the similar results as a serial schedule is known as a serialisable schedule. But how can a schedule are determined to be serialisable or n
Question: (a) Use the following business rules to produce the E-R diagram. You should clearly show all the minimum and maximum cardinality constraint on each side of the relati
What is schema
Critically explained the benefits and limitations of different database technologies with proper examples
Define Network DBMS The NDBMS is built primarily on a one-to-many relationship, but where a parent-child representation between the data items cannot be ensured. This may occur
What is the difference between a key and a superkey? Key - A key a single attribute or a combination of two or more attributes of an entity set which is used to identify one
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