Store the following fields for a library database: AuthorCode, AuthorName, BookTitle, BorrowerAddress, BorrowerName, BorrowerCardNumber, CopiesOfBook, ISBN (International Standard Book Number), LoanDate, PublisherCode, PublisherName, and PublisherAddress. A one-to-many relationship exists between publishers and books. Many-to-many relationships exist between authors and books and between borrowers and books.  Without creating a set of dependency diagrams, write the relational schema that meet 3rd NF requirements.

We have the following functional dependency A -> B. The following is a well-formed database design. MYTABLE (TheKey, A, B, C) True False

Consider the following database instance. Table name: Students  Primary key: sid Sid sname 7 Ricky 2 Ellen 6 MaryLou 4 Ellen   Table name: Courses  Primary key: cid cid cname 1 ICS 2 Finance   Table name: Register Primary key: sid,cid Foreign key: sid references Students(sid) Foreign key: cid references Courses(cid) sid cid 7 2 2 2 7 1 4 1   5.1) For each of the following statements, show whether the statement is correctly executed or not (assume that the statements are executed in order, which means that if a statement is correctly executed, its effect is reflected in the following statement). If you say the statement is not executed, explain why. INSERT INTO Students VALUES (3, ‘Ellen’);     INSERT INTO Students VALUES (6, ‘Ellen’);     INSERT INTO Register VALUES (1, 2);     INSERT INTO Courses VALUES (5, ‘Systems’);     INSERT INTO Register VALUES (6, 5);     INSERT INTO Register…

The term "interpolation of attributes" is a little vague.

Complete the Python program to create a Horse table, insert one row, and display the row. The main program calls four functions: create_connection() creates a connection to the database. create_table() creates the Horse table. insert_horse() inserts one row into Horse. select_all_horses() outputs all Horse rows. Complete all four functions. Function parameters are described in the template. Do not modify the main program. The Horse table should have five columns, with the following names, data types, constraints, and values: Name Data type Constraints Value Id integer primary key, not null 1 Name text   'Babe' Breed text   'Quarter horse' Height double   15.3 BirthDate text   '2015-02-10' The program output should be: All horses: (1, 'Babe', 'Quarter Horse', 15.3, '2015-02-10')

A hospital would like to set up a database recording which registered nurse looked after which patient etc. Each registered nurse has a unique nurse ID, and each patient has a unique patient ID, and the following attributes are found for nurses, and patients in the first round of design: NURSE: nurselD, sumame, first name, birthdate, dept-code, sex, salary-level PATIENT: patientID, surname, first name, birthdate, wardID, sex, admission_date, discharge_date A recent duty list shows the patients that were cared by cach nurse in past 2 months, sce below for some samples: nurselD patientID N0140000 P123, P234, P883, P678 N0172222 P234, P334, P222, P883 N0182222 P243, PI23, P883, P888 N0163333 P111, P123 N0164444 P222, P234 You are responsible to help design this database for the hospital. a) What relationship (one-to-one, one-to-many, many-to-many) exists between NURSE and PATIENT?. b) How many tables would be needed to implement the relationship as indicated in (a)? List out the…

You are creating a database for storing information for a Netflix like service. The database stores movies with id, title, filename and TV shows with id, title. TV Shows have episodes. Each episode has a corresponding TV show, a season id, an episode id, title, filename. Some episodes have a next episode (i.e. the episode that will automatically start showing once the user finishes watching the current episode!). The database also stores users, each user has an id, username, password. Users may watch zero or more movies, zero or more TV show episodes. For each movie or episode, the database stores a watch time value for each user, indicating how many minutes the user watched that movie or show. Finally, the database stores which movie appears similar to which other movie for a given user (to be able to make recommendations). Construct an E-R diagram (based on a Chen's model) to represent the above requirements. Make sure you include all appropriate entities, relationships, attributes,…

Assumptions: You can make the following assumptions in this project. The database stores information about houses, each with a house ID, address, and zip code. The database stores information about person, including person ID, house ID where the person lives, person name, phone number, and status where 1 means currently tested positive (i.e., the most recent test result is positive), 0 means currently tested negative (i.e., the most recent test result is negative), and null (no test so far so status is unknown). The database stores information about a person's all past tests, including person ID, test date, and result (1 means positive and 0 negative). The database stores information about events (could be gathering, party, etc.). Each event has an event ID, event name, date, and address. The database stores information about a person participated in an event. The database stores information about flights, including flight ID, flight date, flight number (a varchar type e.g.,…

Another action may be triggered by the execution of a trigger. There is often a limit on how deep nesting may go in database systems. Why could they impose such a restriction?

Another action may be triggered by the execution of a trigger. There is often a limit on how deep nesting may go in database systems. Why could they impose such a restriction?