Question 6 (Long Problem): Consider the database shown in Table 3. Answer the following questions : -a. Let minimum support = 3. Find all frequent sequences using SPADE algorithm up toLevel 3 (root is level-0) for the set of sequences shown in Table 3.Table 3. Sequences for question 6SEQUENCEGATACAGTATGCIDS1S2S3S4AACATAATGCGT

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Answered: Question 6 (Long Problem): Consider the…

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

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Read Scnerio carefully : Make a 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. Required to define Entities and their attributes Attributes Types Each Attribute Required Define keys of each entity Define relationship between the entities.
The following is the relation notation of a database table in 1NF ORDER(CustNum, CustFN, CustLN, OrderNum, OrderDate, ProdNum, ProdDesc, Qty, UnitPrice) The functional dependencies are given below: CustNum → CustFN, CustLN OrderNum - OrderDate, CustNum, CustFN, CustLN ProdNum → ProdDesc OrderNum, ProdNum -> UnitPrice, Qty Use the functional dependencies above to answer the following questions. Don't not make additional assumptions and functional dependencies. A. List all partial dependencies in the relation only (if any) using the dependency numbers. Don't write the dependencies in X->Y format, just indicate their numbers (which are listed on the left side, i.e., 1, 2, 3, 4). Indicate only the dependencies that you think are partial. B. Identify and show the 2NF. Show primary keys and foreign keys references. Use relational notation (show references). Write down all relations and their references below. C. List all transitive dependency in your answer to question b (if any)…
Consider the following Books database which is used to keep track of books and their readers. Assume that the database is composed of the following three relations where the key attributes are underlined. BOOK Title PERSON READS PID 111 111 222 333 444 BID PID 111 Gender BookID StartDate 2/4/2015 PYear Price Name 2 Internet programming Database System Programmin g using C++ 1 2016 50 Sami M 3 2/6/2015 8/4/2017 Khawla Rawan Zainab Khamis 222 2 2013 45 4 333 444 2 2/6/2015 3 2011 25 555 M 2 2/4/1995 444 1 2/8/1995 Operating Systems Oracle DBMS 4 2009 35 5 2017 50 • Write a SQL query to display the information including title, name (person name), and PID of all the books which have been read (StartDate) in the year 2015, and the price of these books is less than 50. Convert the generated SQL query into a Relational algebra query. Then, draw the optimized query tree (fifth step of query optimization). Note: You can draw a tree on a paper, scan, and upload in the Moodle OR you can describe…
Consider a database with the following tables: Using sql query or steps V Patient(PatientID. PatientName, NumberOfVisits) / Doctor(DoctorID. DoctorName) Appointment(AppID. DoctoriD, PatientID, Date, time) 1.Create a Schema called DR and Add Assign those tables to it.
Consider the relational database of Figure 3.19. Give an expression in SQL foreach of the following: Modify the database so that the employee whose ID is '12345' now lives in “Newtown”.
DATABSE
QUESTION 5 Consider the following database schema for a library. Book (BookID:int, BookTitle:string(unique), Author:string, publisher:string) Borrowing-Record (BookID: int, CustomerCPR: int, Date: date, Time: time, Price: double) Customer (CPR:int, name: String) Is it possible to have two different books (with different ID) to have the same title? No, violates referential integrity constraint. Yes. No, violates domain constraints. No, violates entity Integrity constraint. No, violates key constraint. O O
QUESTION 15 Consider the database schema below for cities in countries. A country have many cities, and the same city name can be found in different countries. Country (ID: integer, Name: String (unique) City (serialNo: integer (unique, not null), CountrylD: Integer, CityName: String, Population: integer) A city can have unknown serialNo? O Yes. No, violates domain constraints. O No, violates key constraint. O No, violates referential integrity constraint.
A relation r(A, B, C) had multi-valued dependencies among all its attributes. It was decomposed for achieving a better database as follows r1(A, B) r2(B, C) r3(C, A) This is an example of what kind of normalization? BCNF 4NF OPJNF DKN
Task 1: The InstantRide Management team founded a new team for car maintenance. The new team is responsible for the small maintenance operations for the cars in the InstantRide system. The main idea is to take actions faster and minimize the time spent for the maintenance. Therefore, the Car Maintenance team wants to store MAINTENACE_TYPE_ID (char(5)) and a MAINTENANCE_TYPE_DESCRIPTION (varchar(30)) in the database. Using MAINTENANCE_TYPE_ID as the PRIMARY KEY, create a new table, MAINTENANCE_TYPES, and send the table description with the column names and types to the Car Maintenance team.
Assume that a student table in a university database had index on StudentID (the primary key) and indexes on Major, Age, MaritalStatus, and HomeZipCode (all secondary keys). Further, assume that the university wanted a list of students majoring in MIS or computer science, over age 25, and married OR students majoring in computer engineering, single, and from the 45462 zip code. How could indexes be used so that only records that satisfy this qualification are accessed?
Database Management Systems

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