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Describe the different procedure performed on in DBMS for student database in which fields are student id, student name, student class, marks. Write down the difference between traditional file systems Vs modern database environment
Describe the following:
i. Physical data independence Vs logical data independenceii. DDL Vs DMLb. Describe criterion for Database classifical
Explain how you would follow three phases of traditional database design method (Hierarchical, Network, and Relational), considering the following scenario.
Input names of students from the user, terminated by ZZZ, and create a data file GRADES with records of the form.
Difference between obsolescent and redundant stocks
All primary keys are underlined. All foreign keys have same name as primary key that they are referencing. Determine the names of all Tracks which are more than 10 minutes (600,000 ms) long.
creating database structure using SQL
Create a database using Oracle packaged procedure
Create Entity-Relationship diagram for a bookstore database, that maintains information about books, professional journals, their authors, and publishers.
Consider relation schema r(A,B,C,D,E, F) and a set of functional dependencies {A BCD,BCDE,BD,DA}. Calculate canonical cover for set of functional dependencies (show each step of your derivation with an explanation).
Explain the thought process of DBA as they craete the database to be fault tolerant. What policies would you suggest to get this goal?
Assume that data warehouse consists of three dimensions time, customer, and cell phone plan, and two measures number of calls and cell phone bill. Sketch a schema diagram for above data warehouse using star schema.
You are to design a prototype for a hospital management system. Design a data model for this system, Convert the data model to a set of virtual windows.
Write SQL statements that do the following: Calculate the average salary for all employees. Calculate the maximum salaries for exempt and non-exempt employees.
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