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Question:
A DBMS built for Online Transaction Processing (OLTP) is generally regarded as unsuitable for data warehousing. Each system is designed with a different set of requirements.
(i) Give example of how OLTP systems differ from data warehousing systems.
(ii) Illustrtae any problems that are associated with developing and managing a data warehouse.
(iii) Explain what is meant by Metadata and what are the purposes of a Metadata in data warehouse architecture.
(iv) Show how data marts differ from data warehouses and identify any two reasons for implementing a data mart.
Differentiate between a unique key and a primary key. - By default, clustered index on column are created by primary key while nonclustered index are created by unique key.
Define the Attribute Inheritance The attributes of a higher level entity set are inherited through a lower level entity set made by specialization-generalization hierarchy. Nam
What is the most significant feature that does not directly map into programming language structures? Why? Association, since there are complex types of association, like as qu
What are multiple inheritances? Multiple inheritances allow a class to inherit variables and methods from many super classes.
How to draw an ER diagram to a finance companz
Find a 3NF decomposition of the following relation scheme: University (Faculty, Dean, Department, Chair, Professor, Rank, Student}. The University relation satisfies the following
Consider the relations City (city_name, state) Hotel (name, address) City_hotel (hotel_name, city_name, owner) Answer the following queries in relational algebra (i) Find
Three way to handle missing field val
Define rotational latency time. The time spent waiting for the sector to be accessed to appear under the head is known as the rotational latency time.
When It is better to use files than a DBMS? It is better to use files than a DBMS when Multiple users wish to access the data.
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