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What is transaction?
Transaction is a unit of program implementation that accesses and possibly updated several data items.
Scenario: You are a freelance database designer who has just been contacted by a small software development company named Altair Software. The president of the company has asked
Concatenation operator Example : Printing name and job as one string as column name employees: SELECT ENAME||JOB "EMPLOYEES" FROM EMP;
Describe Database state in details? Database state: The actual data within the database at a particular moment in time is known as a database state.
1. Use the Invoice table structure shown below to answer the following questions: a) Draw the dependency diagram and identify the primary key and all dependencies, including al
List and explain the memory constructs of the Oracle 12c databases?
Question 1 What are the advantages of DBMS approach in managing data? Question 2 What are the services provided by a database system Question 3 List and briefly describe
In E-R Diagram how relationship type is represented ? In E-R Diagram relationship type is represented as a Diamond.
The natural join is equal to which product? The natural join is equal to Combination of projection and Cartesian product
What Is Sql? Structured Query Language (SQL) is a standard query language. It is usually used with all relational databases for data manipulation and definition. All the re
why three level architecture had been developed/
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