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What is conceptual schema?
The schemas at the view level are known as subschema that describe dissimilar views of the database.
Write short notes on Schema diagram. A database schema along with primary key and foreign key dependencies can be depicted pictorially by schema diagram. Every relation appears
Compute the closure (F+) for the following set of the functional dependencies defined on R(a,b,c,d), where F - {c→ a, ab → d, a → b, d → c}, i.e. what are all of the FDs implied b
The State of Newyork certifies firefighters throughout state keep track all of them, as well as the state’s of fire departments. Each fire department has unique department number
why older data models are being replaced by new data models.
Question: Describe briefly the three parts of the Relational Model. (a) The term integrity refers to the accuracy or correctness of the data in the database. Define the fol
Give some encryption techniques? A) DES B) AES C) Public key encryption
Assume that you are responsible for selecting a new DBMS product for Sohar Hospital
What are composite attributes? Composite attributes can be separated in to sub parts.
The Database administrator (DBA) uses the data dictionary in each phase of a database life cycle, beginning from the data gathering phase to the design, execution and maintenance p
I have to solve a problem using access
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