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Load sample data into the database tables design and test queries to return the following information
• All rows and columns for employees• All rows and columns for customers• A count of sales orders• A list of customers who have placed orders• Sales order information including individual items
Prepare a write-up in Microsoft word to describe how busicorp might benefit in the future from data warehousing and data mining include the types of data you would transfer into the warehouse and what aspects of the business might benefit from the information that could be mined from the warehouse.
What is System R? What are its two major subsystems? System R was intended and developed over a period of 1974-79 at IBM San Jose Research Center. It is a prototype and its pur
Explain Strict Two-Phase locking A transaction T does not release any type of its exclusive (X) locks until that transaction commits or aborts. In this method no other transact
Create Student DB and perform delete operation? STUDENT (name, student#, class, major) COURSE (course name, course#, credit hours, department) SECTION (section identifier, co
What are the uses of ODBC? Under what circumstances we use this technology? ODBC expose database capabilities within a standardized way to the application programmer by an ap
note on hashing technique
Define instance and schema? Instance: Collection of data kept in the data base at a particular moment is known as an Instance of the database. Schema: The o
what is natural join?
What is Primary key? Primary Key - Primary key is one of the candidate keys which uniquely identifies each row in the relation.
Atomicity : Either all functions are laid out or none are. Users could not have to think about the effect of incomplete operations. DBMS ensures this by undoing the functions
What are the disadvantages of file-processing system? Ans: The Disadvantages of File-Processing System a. Data redundancy and inconsistency - Data redundancy means not nece
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