2.2. Given the following sequence of operations on an empty Deque. Provide a visual representation of the Deque at each operation. add_last("customer 1") add_first("customer 2") add_first("customer 3") first() delete_last()
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- Implement your table design by creating table statements. Your tables should have constraints such as primary keys and foreign keys. (You can use MySQL Workbench or any other database management system of your choosing). Types such as Char, Integer must be correctly placed. 2) Add one trigger to your database that utilizes a default function of your DBMS 3) Add dummy data to your database. (5 manual entries for each table should be sufficient.) 4) Consider the nominal forms and integrity of your database, it will affect your grade. Export your database from your DBMS, zip it and submit the zip file. Thank you!Below given relations of a database are in First Normal Form (1* NF). Decompose (Split) the relations to Normalize in 2NF and 3NF. tbl_Project Project Code Project Name Project Manager Budget PC010 Reservation System Mr. Said HR System Attendance System Mr. Rajesh 25000 PC011 MS. Malak 32000 PC012 19000 tbl_Emp_Dept Project Code Emp No Emp Name Dept No Dept Name Hourly Pay PC010 S100 Ali Mohd. D03 Database 7.500 PC010 S101 Hamood D02 Testing 5.500 PC010 S102 Riyaz D01 IT 8.200 PC011 S103 Pavan D03 Database 6.500 PC011 S104 Basma D02 Testing 5.400 PC011 S115 Asaad D01 IT 7.900 PC012 S137 Fathima D03 Database 6.200 PC012 S218 Avinash D02 Testing 6.100 PC012 S109 Роja D01 IT 9.300Assignment 4: Question#1: Give any three examples of transaction where next operations are dependent upon previous and focus on importance of transaction. Question#2: Execute the given transaction left to right and fill “local variable” and “Database variable” columns. Initial Database Values: x=30, y=50,z=80
- a) Create the proper database using sql queries that stores students information (ID,Name) with thier marks (Testl, Test2, Assignment1, Assignment2) then calculate and store the total mark and the final grade (A, B, C, D or F) within the same database. b) Add to the created database in (a), 10 records and then delete the record with the lowest total mark after viewing all the record (only ID and final grade).Below given relations of a database are in First Normal Form (1st NF). Decompose (Split) the relations to Normalize in 2NF and 3NF. tbl Project Project Code Project Name Project Manager Budget Reservation System HR System Attendance System PC010 Mr. Said 25000 PC011 MS. Malak 32000 PC012 Mr. Rajesh 19000 DBMS tbl Emp Dept Project Code Emp No Hourly Pay Emp Name Dept No Dept Name Ali Mohd. PC010 S100 D03 Database 7.500 PC010 S101 Hamood D02 Testing 5.500 PC010 S102 Riyaz D01 IT 8.200 PC011 S103 Pavan D03 Database 6.500 PC011 S104 Basma D02 Testing 5.400 PC011 S115 Asaad D01 IT 7.900 PC012 S137 Fathima D03 Database 6.200 PC012 S218 Avinash D02 Testing 6.100 PC012 S109 Роoja D01 IT 9.3007. A “natural join" in a relational database takes two tables of information and combines entries from the tables that share a particular field. You can read more about this at Wikipedia. Interpret the tables below as sets of sets? For the Course Enrollment Table define A = {{A38182818, Spring2021, Math230, 01}, ..., {A56363631, Spring2021, Math454, 01}}, and for the Student Table define B = {{Al, A81723653}, {Jo, A38182818}, {Su, A56363631}}. Course Enrollment Table Student Table A38182818 | Spring2021 | Math230 | 01 A81723653 | Spring2021 | Math350 01 Al A81723653 A81723653 Fall2020 Math152 04 Jo A56363631 A38182818 Fall2020 Math332 02 Su A38182818 A56363631 | Spring2021 Math454 | 01 (a) Construct the set C = {xUy : x € A, y E B, x N y # 0}. (b) Represent the resulting set C from part (a) as a table, similar to what you see above. Make sure to write down the table for C in a reasonably sorted order. (c) Why would you want to query the database for the set {x € C : Al e x}? Be…
- 1)a Discuss when it is best to use indexes. b) Discuss three possible opportunities for denormalization.Consider the following Course table from course management system. Course_name Data Structures Database Discrete Mathematics Programming principles Course_number CS1202 CXB3100 MAT1201 PRG 1102 Table 1 Credit_hours Department DCIS DCIS Maths 4 3 3 4 DCIS Write a trigger that fires when a row is deleted from the above Course table (Table 1). The trigger records in a temporary table, called Removed Courses with the following information: the removed course name, the course number, and the date the course was deleted.Given the relational database shop defined in the script below; create database shop;use shop; create table users( id int null auto_increment, firstname varchar(255), lastname varchar(255) not null, primary key (id)); create table items( id int null auto_increment, name varchar(255), price float, primary key (id)); create table orders( id int null auto_increment, id_users int not null, id_items int not null, primary key (id), foreign key (id_users) references users(id), foreign key (id_items) references items(id)); write three SQL queries to answer the following questions 1.- All products(items) in the shop catalog; product code, name and price 2.- Products sold in the shop; product code, name and price and full name of buyer. 3.- Products in stock (not sold); product code, name and price
- A database has 4 transactions, shown below.TID Date items_boughtT100 10/15/04 {K, A, D, B}T200 10/15/04 {D, A, C, E, B}T300 10/19/04 {C, A, B, E}T400 10/22/04 {B, A, D}Assuming a minimum level of support min_sup = 60% and a minimum level ofconfidencemin_conf = 80%:(a) Find all frequent itemsets (not just the ones with the maximum width/length) using the Apriori algorithm. Show your work—just showing the final answer is not acceptable. For each iteration show the candidate and acceptable frequent itemsets. You should show your work similar to the way the example was done in thePowerPoint slides.(b)List all of the strong association rules, along with their support and confidence values, whichmatch the following metarule, where X is a variable representing customers and itemi denotes variables representing items (e.g., “A”, “B”, etc.).x transaction, buys(X, item1) buys(X, item2) buys(X, item3)Hint: don’t worry about the fact that the statement above uses relations. The point of the…Question 1) We plan to construct a database for the FAU parking service shstem. The FAU has many parking-lots which can accommodate many vehicles. Each parking-lot has id, name, and location. A parking-lot consists of many parking spaces (or spots) and each parking space (or spots) has a unique number. Every student has School_ID and name. A student can purchase more than one parking-permit. A vehicle has id, brand, and color. A student can own multiple vehicle. Each parking permit has no. and price. A parking-permit allows a vehicle to park in dedicated parking spaces (or spots). The FAU maintains a time table and uses it to record when a student parks a vehicle at a dedicated parking space (or spot) at a specific time-slot in the time- table. A time-table has id, date, and hour. Draw an ER diagram for this application. Specify key attributes of each entity type and structural constraints on each relationship type. Note any unspecified requirements, and make appropriate…We discuss the potential performance issues that might arise from using a normalized version of the Index metadata relation.