Computers and Technology, 06.06.2020 21:05 cathydaves
Consider the LIBRARY relational database schema description provided below which is used to keep track of books, borrowers, and book loans. The relations are: • BOOK (BookID, Title, PublisherName) • BOOK_AUTHORS (BookID, AuthorName) • PUBLISHER (Name, Address, Phone) • BOOK_COPIES (BookID, BranchID, NumberOfCopies) • BOOK_LOANS (BookID, BranchID, CardNumber, DateOut, DueDate) • LIBRARY_BRANCH (BranchID, BranchName, Address) • BORROWER (CardNumber, Name, Address, Phone) 1. Consider the schema given above: (a) (5 points) Give a primary key for each relation. Are there any relations for which there is an alternate candidate key that you have not chosen as the primary key? If yes, mention the relations, candidate keys and the reason (if any) for your choice of the primary key. (b) (10 points) State all referential integrity constraints that should hold on these relations.
Answers: 1
Computers and Technology, 22.06.2019 16:10, katherineweightman
When copying and pasting text, the first step is move your cursor type the text select the copy command select the paste command
Answers: 2
Computers and Technology, 23.06.2019 01:00, EhHannuh6865
Let r be a robotic arm with a fixed base and seven links. the last joint of r is a prismatic joint, the other ones are revolute joints. give a set of parameters that determines a placement of r. what is the dimension of the configuration space resulting from your choice of parameters?
Answers: 3
Computers and Technology, 25.06.2019 06:00, carolinagarciap8kgmi
In 2 to 3 sentences, describe how you would change the background of a group of cells
Answers: 1
Consider the LIBRARY relational database schema description provided below which is used to keep tra...
Mathematics, 26.02.2020 03:54
Mathematics, 26.02.2020 03:54
Mathematics, 26.02.2020 03:54
History, 26.02.2020 03:54
Social Studies, 26.02.2020 03:54
Mathematics, 26.02.2020 03:54