choose the correct answer 2) What do you mean by one-to-many relationship between Teacher and Class table?Choose the letter of the correct answer:1) In a database Table, the each category of information Is calledA. Field B, RecordС uple.D. All Of AboveA. One class may have many teachersB. Many classes may have many teachers(COne teacher can have many classes D. Many teachers may have many classes173) It is used to establish an association between related tables.30A. RecordsB Relationship C. Primary Key D. Line4) Which of the following operations requires the relations to be union compatible?A. INTERSECTIONBUNIONC. DIFFERENCED. ALL OF THESE5) A table can have only one(A) Secondary key (B Primary key (C) Unique key (D) Alternate key6) Which of the following is not a database modelA. Object Oriented Database ModelB. Relational Database ModelLC Network Database ModelD. None7) Relational Algebra is(A)Data Definition Language(B) Meta Language(C) Procedural query Language8) Which of the following relational algebraic operations is not from set theory?(D) None of the above(B) Intersection (C) Cartesian Product (D) SelectYA Unionbetween tables.9) The stage of designing a database is when we createA. Query B. Join CRelationship D. None of Theseattribute.10) In an E-R diagram double lines ellipse indicateB)Multiple Values (C) Derived (D) None of the above(A) Specialization

As per company guidelines we are suppose to answer only first 3 subparts of the question. Kindly…

1) In a database Table, the each category of information Is called A. Field B,Record C Tuple D. All Of Above 2) What do you mean by one-to-many relationship between Teacher and Class taờle: B. Many classes may have many teachers have many A. One class may have many teachers classes One teacher can have many classes D. Many teachers may 3) It is used to establish an association between related tables. A. Records B. Relationship C. Primary Key D. Line

1) In a database Table, the each category of information Is called A. Field B,Record C Tuple D. All Of Above 2) What do you mean by one-to-many relationship between Teacher and Class taờle: B. Many classes may have many teachers have many A. One class may have many teachers classes One teacher can have many classes D. Many teachers may 3) It is used to establish an association between related tables. A. Records B. Relationship C. Primary Key D. Line

Database Systems: Design, Implementation, & Management

11th Edition

ISBN:9781285196145

Author:Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos Coronel

Publisher:Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos Coronel

Chapter10: Transaction Management And Concurrency Control

Section: Chapter Questions

Problem 1P

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Let's say there is only room for one student in a course, and two people are seeking to sign up. What property of a database system makes it impossible for both students to be placed in the last open seat?
Take a database, having FDs as: DOB->Age; Age->Eligibility; Name->RollNo; RollNo->Name; CourseNo->CourseName; CourseNo->Teacher; (RollNo, CourseName)->Marks. The relation (RollNo, Name, DOB, Age) is in which Normal Form?
Assume there are two students who want to take a class but there is only place for one of them. What circumstances prevent both students from being assigned to the database system's final available seat?
1. A movie may have many actors, and an actor can act in many movies. An actor can play more than one role in the same movie. Suppose we try to represent this in our database using an Actor table, a Movie table, and a Role table. The Role table has a foreign key to reference the Actor table, plus the name of the role and the title of the movie. a) There might be actors who do not have roles in the Role table b) The actor referenced might not exist in the table c) A role might list a movie title that does not exist in the Movie table d) There could be more than one actor with the same name 2. Suppose we have the following relational model: Movie(mov_id(PK), title, yr) Person(pid(PK), fname, lname, gender) Acts_In(actor_id(PFK), movie_id(PFK), role) -- actor_id references Person, movie_id references Movie What would be true of the following query? SELECT fname, lname FROM Movie m, Acts_In a, Person p WHERE mov_id = movie_id AND actor_id = pid AND yr = 2022 a) It…
WRITE THE CODE OF MYSQL IN PYTHON Create database and tables as given below by using Python. (a) Market database (b) Vendor: vendor_id integer, vendor_name varchar, license_start date, license_end date (c) Item: item_id integer, item_name varchar, item_type varchar, previous_price float, last_sold_date date (d) Auction: auction_id integer, vendor_id integer, item_id integer, price float Choose primary and foreign keys depending on the relations in Market database design.
This question is related to the Database:- Suppose you are creating a database for a library management system. Explain how you would make a table for the "books" entity and insert some sample data, and then alter the table to add a new column for the "authorID" attribute and update "authorID" with some data. Finally, make a SQL query to retrieve all the books that were published after the year 2000. Note that this book schema has several columns, including "book_id" as the primary key, "title", "authorN", "publisher", "publication_year", "isbn", "language", and "num_pages". It also includes "available" column that is set to "true" by default and can be used to track the availability of the book. Please don't use handwriting...
Consider the following scenario: there is only room for one student in the class that two students are trying to enroll in. What aspect of the database system makes it impossible for both students to claim the last open seat?
Let's say there are two students who want to enroll in the same class, but there's only room for one of them. What aspect of the database system prevents both students from obtaining the last open seat in the classroom?
Read the scenario carefully You have to propose and optimal database design in RDBMS for a super store. In which clients came and can purchase products according to their likes and dislikes. Super store have same products of different companies. In the end client received a receipt of their purchase from counter he/she go for bill. Database also save records of stock according to FIFO system.Your required to define1) Entities and their attributes2) Attributes Types 3) Each Attribute Required space.4) Define keys of each entity 5) Defile relationship between the entities.
Since no particular student is affiliated with a number, disclosing the total of all financial assistance for students in Smith dorm is not sensitive. Similarly, since no numbers are mentioned, a list of names of students seeking financial assistance is not sensitive. If only one student in Smith dorm requires funding, the sum of these two lists shows the number for an actual student. What calculations does a database management system have to make to figure out if the list of names contains classified information? What documents does the database management system need to keep on what particular people know in order to decide whether or not the list of names contains classified information?
Use the database shown in Figure P3.1 to answer the questions below:A. For each table, identify the primary key and the foreign key(s). If a table doesnot have a foreign key, write None.B. Do the tables exhibit entity integrity? Answer yes or no, and then explainyour answer.C. Do the tables exhibit referential integrity? Answer yes or no, and then explainyour answer. Write NA (Not Applicable) if the table does not have a foreignkey.D. Describe the type(s) of relationship(s) between STORE and REGION.E. Create the ERD to show the relationship between STORE and REGION.F. Create the relational diagram to show the relationship between STORE andREGION.G. Describe the type(s) of relationship(s) between EMPLOYEE and STORE.(Hint: Each store employs many employees, one of whom manages the store.)H. Create the ERD to show the relationships among EMPLOYEE, STORE, andREGION.I. Create the relational diagram to show the relationships among EMPLOYEE,STORE, and REGION.
Suppose you want to track changes to the takes relation. Has this implementation's audit trail documented unauthorised database administrators or those who break an administrator's password? Specifics are needed in your response.

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