Answer the following questions:●What is normalisation?When is a table in INF?When is a table in 2NF?When is a table in 3NF?Attribute Sample SampleNameValueValueUsing the INVOICE table given below, draw its dependency diagram andidentify all dependencies (including transitive and partial dependencies).You can assume that the table does not contain any repeating groups andthat an invoice number references more than one product. Hint: This tableuses a composite primary key.INV_NUMPROD_NU AA-E3522QWMSALE_DATE211347PROD_LABEL15-Jan-2018RotarysanderVEND_CO 211DE2113472XQD-30093 RU-995748G15-Jan-20180.25-in.Drill bitSampleValue21121134715-Jan-2018Band saw309SampleValue211348AA-E3522QW15-Jan-2018Rotarysander211SampleValue211349GH-778345P016-Jan-2018Power drill157no ●VEND_NA NeverFail, Never Fail,MEInc.Inc.QUANT_SOLD1PROD_PRI $34.46CE8$2.73BeGood,Inc.1$31.59Never Fail,Inc.2$34.46ToughGo,Inc.1$69.32Using the answer to the above question, remove all partial dependenciesand draw the new dependency diagrams. Identify the normal forms foreach table structure you created.Using the answer to the above question, remove all transitive dependenciesand draw the new dependency diagrams. Identify the normal forms foreach table structure you created.

Normalization It is a process in database management systems (DBMS) that involves organizing and…

Answer the following questions: • What is normalisation? ● When is a table in INF? ● When is a table in 2NF? When is a table in 3NF? • Using the INVOICE table given below, draw its dependency diagram and identify all dependencies (including transitive and partial dependencies) You can assume that the table does not contain any repeating groups and that an invoice number references more than one product. Hint: This table uses a composite primary key. Attribute Sample Name Value INV_NUM 211347 Sample Value 211347 Sample Value 211347 Sample Value 211348 Qr Sample Value 211349

Answer the following questions: • What is normalisation? ● When is a table in INF? ● When is a table in 2NF? When is a table in 3NF? • Using the INVOICE table given below, draw its dependency diagram and identify all dependencies (including transitive and partial dependencies) You can assume that the table does not contain any repeating groups and that an invoice number references more than one product. Hint: This table uses a composite primary key. Attribute Sample Name Value INV_NUM 211347 Sample Value 211347 Sample Value 211347 Sample Value 211348 Qr Sample Value 211349

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Similar questions

How does 5NF differ from 4NF? a.) 5NF has no multivalued dependencies. b.) There is no difference between the two. c.) 5NF is more practical in real-world settings. d.) 5NF does not contain any join dependencies.
Using the INVOICE table structure shown in Table P6.3, do the following:TABLE P6.3a. Write the relational schema, draw its dependency diagram, and identify alldependencies, including all partial and transitive dependencies. You can assumethat the table does not contain repeating groups and that an invoice numberreferences more than one product. (Hint: This table uses a composite primarykey.)b. Remove all partial dependencies, write the relational schema, and draw thenew dependency diagrams. Identify the normal forms for each table structureyou created.NoteYou can assume that any given product is supplied by a single vendor, but a vendorcan supply many products. Therefore, it is proper to conclude that the followingdependency exists:PROD_NUM → PROD_LABEL, PROD_PRICE, VEND_CODE, VEND_NAME(Hint: Your actions should produce three dependency diagrams.)c. Remove all transitive dependencies, write the relational schema, and draw thenew dependency diagrams. Also identify the normal forms for…
What is the purpose of denormalization? Whymight you not want to create one physical tableor file for each relation in a logical data model?
Identify the primary key(s)in the table below. Draw as-is dependency diagram and identify types of dependencies. Is this table 3rd normal form? If not, convert it to 3rdnormal form.
Consider the following table schemas (primary keys are underlined): Company (cID, name, location) Flight (cID, fnumber, departure, arrival, price:integer, numberOfSeats:integer) Book (bID, cID, fnumber, customerID, seat, date) Customer (customerID, name, address) Draw Query-By-Example (QBE) tables for the following queries. 1.Find the names and addresses of customers who never booked a flight. 2. Find the names of customers who booked the flight to New York more than once. 3.Find the names of the companies that have the biggest (in terms of the number of seats) airplane. 4. Find the names of customers who booked flights to Boston and Seattle. 5. Insert tuples into a new table CustomerCheck that stores the names and addresses of customers along with their flight numbers who booked a flight from New York to LA on 09/30/21. Note: Query by example table is needed not just any table
Consider the follow relations’ schemas to answer the following questions: Student (sid, name, level, address) Book(bid, title, author) BorrowedBook(sid, bid, date) 1) Assume that, there are 10,000 Student records stored on 1,000 pages/blocks, 50,000 Book records stored on 5,000 pages, 300,000 BorrowedBook records stored on 15,000 pages, and there are 500 different authors. Find out what is the record size for each of the previous relation?, and what is the blocking factor for each relation?
Consider the following relation named Trip. Trip The functional dependencies are as follows: (TripID, TripName, StartLocation, State, Distance, MaxGrpSize, Type, SeasonNum, Season TripID, SeasonNum → TripID → A. SeasonNum →→ Season C. [TripName, StartLocation, State, Distance, MaxGrpSize, Type The tables that are in third normal form are: [TripName, StartLocation, State, Distance, MaxGrpSize, Type, Season Trip TripID, TripName, StartLocation, State, Distance, MaxGrpSize, Type) Season (Season Num, Season), TripSeason (TripID, SeasonNum) B. Trip (TripID, TripName, StartLocation, State, Distance, MaxGrpSize, Type) Season (SeasonNum, Season) Trip TripID, TripName, StartLocation, State, Distance, MaxGrpSize, Type) Season (TripID, SeasonNum, Season) D. None of the above
Complete a database design for both the Invoice_printed and Real Estate Agent Listings problems / cases. Display your normalized tables as as demonstrated in the following format: TABLENAME(Field 1 (pk), Field 2, Field 3........)
Given the sample records in the CHARTER table shown in Table P6.11, do the following:a. Write the relational schema and draw the dependency diagram for the table structure. Make sure that you label all dependencies. CHAR_PAX indicates the number of passengers carried. The CHAR_MILES entry is based on round-trip miles, including pickup points. (Hint: Look at the data values to determine the nature of the relationships. For example, note that employee Melton has flown two charter trips as pilot and one trip as copilot.)b. Decompose the dependency diagram you drew to solve Problem 11a to create table structures that are in 3NF and write the relational schema.c. Draw the Crow's Foot ERD to reflect the properly decomposed dependency diagrams you created in Problem 11b. Make sure the ERD yields a database that can track all of the data shown in Problem 11. Show all entities, relationships, connectivities, optionalities, and cardinalities.To upload and submit your assignment, click the Choose…
Informally describe the conditions to be met for a relation to be in Second Normal Form. In terms of functional dependency, describe why the following CUSTOMER_PURCHASE relation is not in second normal form. This table describes every instance of an individual Customer purchasing a Product. How would this relation suffer from Update Anomalies? CUSTOMER_PURCHASE (CUSTOMER_ID, PRODUCT_ID, PURCHASE_DATE, PURCHASE_AMT, PRODUCT_DESCRIPTION, CUSTOMER_NAME) Note the relation’s primary key is underlined
Question 3: Create the DDL statements to create the tables described in your modified ER diagram in question 2: DDL Statement: CREATE TABLE School ( school_code integer Primary Key(10), location varchar(25), name varchar(10) ); CREATE TABLE Professors ( staff_id integer(10), name varchar(20), school varchar(30) ); CREATE TABLE Course ( subject_code varchar(10), school varchar(30), name varchar(10) ); CREATE TABLE Subject ( subject_code(10), school varchar(30), name varchar(10) ); CREATE TABLE Student ( student_id number(10), name varchar(10), address varchar(30), phone number(10) ); Table Description desc table School; Select * from School; Name Null Type school_code Not null integer location Not null varchar(25) name Not null varchar(10) desc table Professor; Select * from Professor; Name Null Type staff_id Not null number(10) name varchar(20) school varchar(30) desc table Course; Select * from…
1) List all the functional dependencies of the above table. (Note, this requires you to state all the functional dependencies, not just count the number). 2) What normal form(s) is the table currently in? Justify your answer.