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1. Design the logic, using a looping structure, for a program that outputs every even number from 1 through 25 along with its square and cube.
2. Mr. Sanchez owns 12 apartment buildings. Each building contains 20 units that he rents for $725 per month each. Design the flowchart, using a looping structure, that would output 12 payment coupons for each of the 20 apartments in each of the 12 buildings. Each coupon should contain the building number (1 through12), the apartment number (1 through 20), the month (1 through 12) and the amount of rent due.
Define the Third Normal Form: The third normal form (3NF) is a normal form employed in database normalization. 3NF was initially defined by E.F. Codd in 1971. Codd's definitio
Discuss deferred update technique of recovery. What are the advantages? Ans: The deferred update methods do not physically update the database on disk till after a transact
Can i get help with weka software
Most computer systems authenticate users by asking them for the user name and password. However, the user names and passwords often can be guessed by hackers. Suggest an automated,
For each m:n relationship type R, we make a new table (say S) to represent R. We also contain the primary key attributes of both the participating entity types as a foreign key att
User error : This contains errors in the program (e.g., Logical errors) with errors made by online users of database. These types of errors can be avoided by applying some check
What is called query processing? Query processing refers to the range of activities included in extracting data from a database.
The Database Approach In order to overcome the limits of a file system, a new approach was needed. Hence a database approach emerged. A database is a persistent collection of
What is data definition language? Explain it in detail? The SQL DDL allows specification of not only a set of relations, but also information after each relation, containing
Express the subsequent query in SQL assumes which the data is stored within EMPLOYEE table with relevant fields (i) Display name, job, salary, and hire date of employee who are
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