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What is object containment? References among objects can be used to model dissimilar real-world concepts.
create an e-r diagram usuing graphical dipicted software that could theoritically be used in resturant application
For every multivalued attribute 'A', we make a new relation R that contains an attribute corresponding to plus the primary key attribute k of the relation that shows the entity typ
Give an example of Operations from the functions of a bank. For creation of a saving account, you can write: bank::: create -savings-account (customer)->account. For oper
what is RDBMS? how it works? good example.
Fundamentals of Database Management 1. Explain the concept of Foreign Key. How a foreign key differs from a Primary Key? Can the Foreign Key accept nulls? 2. With a necess
Timestamp Ordering Protocol A timestamp is a tag that can be attached to any transaction or any data item, which indicates a specific time on which the transaction or data item
What are the advantages and disadvantages of merging an association into a class? Advantages: i) Less number of tables ii) Faster performance due to the fewer tables
Give some encryption techniques? A) DES B) AES C) Public key encryption
WHAT IS DSS? WRITE ITS REQUIREMENTS.
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