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1. What is the purpose of Database? The purpose of a database is to store information about certain types of objects. Give an example of two related TABLES other the one discussed in the class. Name the TABLE and COLUMS using the convention as discussed in the class. Explain how the two TABLES you created are related. Define the term DATA and INFROMATION. Explain how the two terms differ. What problems can occur when a database is processed by more than one user simultaneously?
Carry out the following tasks below by using the correct SQL statements. Create the statements in Oracle by using the following steps (SQL > SQL commands > Enter Command). Determine the columns that make up the primary key of the l_lunch_items tabl..
How many copies of the book titled „The big magic? are owned by the local library whose name is "Newtown" library?
How can you make your database more hacker proof? How do you ensure the security of an organizations distributed database?
Write an SQL query to get the author of the book "The Alchemist"
Design a dimensional model for analysing Purchases for Adventure Works Cycles and implement it as cubes using SQL Server Analysis Services. The AdventureWorks OLTP sample database is the data source for you BI analysis.
Transform the tables into one or more tables in BCNF. State the primary keys, candidate keys, and referential integrity constraints.
Write a SELECT statement that returns two columns: VendorName and PaymentSum, where PaymentSum is the sum of the PaymentTotal column.
Create a function that returns the day of the week for a specified date. Create a trigger that displays the message "Emp table updated" when an update to the employee table increases the employee's basic salary.
Design and build a prototype data warehouse using the data on Spend over £25,000 in the Science and Technology Facilities Council
In talking about database security, some aspects to regard as are Data Integrity, Confidentiality, and Malicious Activity. Illustrate how does database security relate to data integrity?
Give examples of binary 1:N relationships, for (a) an optional-to-optional relationship, (b) an optional-to-mandatory relationship,
What criteria would you use in selecting a life-cycle model for the project?
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