Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Databases and data warehouses both are databases and both contains number of rows and columns of tables containing data. Data warehouse is really different from databases because data warehouse helps in creating a sustainable analysis. It is designed for analysis facilities and query facilities. The data that is stored in a data warehouse is multi dimensional and in databases it ensures that the solution is scalable and managed in a better way and answers the questions easily and very effectively. In most of the companies, managers are most interested in knowing about the buying patterns of the group of the customers rather dealing with only one customer and only one purchase. It is easily found in the data warehouses decision support system if the sale has been just made.
Most businesses have not just one large database for all their data, both current and historical because in one single database the data is more risky and it becomes easy for a hackers to steal the data, they would achieve their target very easily because if they hack this one single database which is very large in its size they will also save their cost and money and will achieve their target very easily. If you have only one database you will require giving details to some form of access to sales, research and marketing. Most companies have multiple domains and they control their data in these multiple locations. Big companies always host multiple databases with huge number of small systems.
What are partial, alternate,, artificial, compound and natural key? Partial Key: It is a set of attributes that can uniquely recognize weak entities and that are related to s
note on hashing technique
Control Files : The redo and control files logs support the rest of the architecture. Every database must have at least one control file, although you have more than one to guard
What is recursive closure? Why is it not possible to describe this operation in relational algebra? Recursive closure is applied to recursive relationship. An instance of rec
List the types of authorization. A) Read authorization B) Write authorization C) Update authorization D) Drop authorization
Design a generalization–specialization hierarchy for a motor-vehicle sales company. The company sells motorcycles, passenger cars, vans, and buses. Justify your placement of attrib
What is the difference between SQL Server 2000 clustered and nonclustered indexes? With a clustered index, the data are kept in the bottom level of the index and in the similar
Surgeons identified by doctor ID (DOCID) operate on patients identified by patient ID (PATID) in operating theaters identified by room numbers (ROOMNO). Each surgeon can operate on
What is the function of IO/M signal in the 8085? It is a status signal. It is used to differentiate among memory locations and I/O operations. When this signal is low (IO/M = 0
What is normalization? It is a method of analysing the given relation schemas based on their Functional Dependencies (FDs) and primary key to attain the properties (1).Minim
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd