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!
Describe the two alternatives for specifying structural constraints on relationship kinds?
Relationship kinds have certain constraints in which limit the possible combination of entities that might participate in relationship. An example of a constraint is in which if we have the entities Doctor and Patient, the organization might have a rule that a patient cannot be seen through more than one doctor. This constraint needs to be elaborates in the schema. There are two major kinds of structural relationship constraints on: cardinality ratio, and participation.
Question: One of the tasks a database management system must perform is to ensure that the data is still intact in the face of software and hardware failure. This task is known
Define access time. Access time is the time from when a read or write request is issued to when data transfer starts.
Question : (a) Data mining is one of the best ways to analyse data and using software method, hidden and unexpected patterns and relationships in sets of data can be extracte
Describe the host language? Host Language: You could write applications along with SQL statements embedded inside a host language. The SQL statements give the database inter
Sparse and Dense Indexes These indexes in principle are the similar as that of indexes used at the back of the book. The key facts of the indexes are: They are arranged
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
What are called index-sequential files? The files that are ordered sequentially with a primary index on the search key are known as index-sequential files
how to design tables
Define an operator that a Relational Algebra does not have Ans: Relational Algebra does not have Aggregation operators.
Meaningful use refers to the use of certified EHR technology to "enhance quality, efficiency, and reduce health disparities
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