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!
1. Staff (staffID --> availabilityID)
2. Services (servicesID --> itemBasedID --> timedBasedID)
3. TimedBased (timedbasedID--> priceid)
4. Clients (clientId, serviceId--> bookingId)
The bookingID is fully functionally dependant on the clientId and serviced because the clientID says which client the booking is for and the serviceID is what service the client has booked that time.
5. Clients (rclient --> clients )
The clients are partially dependant on rclient as it needs some attributes to find the client (using a query) but not all the attributes.
6. Bookings (bookingID --> staffID --> clientID --> venueID --> serviceID --> paymentID);
7. Parlour (parlourID --> staffID);
What is a database graph? The partial ordering implies that the set D may now be viewed as a directed acyclic graph, known as a database graph.
Define Partial Key and Primary Key A partial key, also known as discriminator, is the set of attributes which can uniquely identify weak entities that are related to similar o
why older data models are being replaced by new data models.
Before defines the second type of integrity constraint, viz., Entity Integrity, we should be well-known with the concept of NULL. Mostly, NULL is intended as a basis for dealing
Explain I command in QBE ? I : It is the command in QBE that is used to insert tuple (s) into the database
Explain the Query Processing Data Query Processing permits a user to report or analyze structured and unstructured data pulled from multiple data sources.
Extend your CREATE TABLE statement from problem 3 with referential integrity constraints. Updates and deletes on related rows are restricted. 6. From examination of the sample data
Define Thomas write rule Thomas' write rule: The Thomas' write rule is a modification of timestamp-ordering protocol for concurrency control. Assume that transaction T i issue
What is De-normalization? De-normalization is the method of attempting to optimize the performance of a database by adding redundant data. It is sometimes essential because cur
Relational and E-R Model There are three types of constraints on relational database that have: DOMAIN CONSTRAINT PRIMARY KEY CONSTRAINT INTEGRITY CONSTRAINT
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