Write down 5 check constraints. Check constraints should be meaningful.
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A: Please refer below for your reference:
Q: Problem 1.6: Add constraints to the EMP1 table to check the EMPNO value while entering (i.e) EMPNO >…
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Q: Explain the constraint between two attributes?
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Q: "What exactly is the idea of integrity constraints
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A: Primary key is one of the columns of the table which uniquely identifies each row in that table.…
Q: Problem 1.6: Add constraints to the EMP1 table to check the EMPNO value while entering (i.e) EMPNO >…
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SQL
SQL stands for Structured Query Language, is a form of communication that uses queries structured in a specific format to store, manage & retrieve data from a relational database.
Queries
A query is a type of computer programming language that is used to retrieve data from a database. Databases are useful in a variety of ways. They enable the retrieval of records or parts of records, as well as the performance of various calculations prior to displaying the results. A search query is one type of query that many people perform several times per day. A search query is executed every time you use a search engine to find something. When you press the Enter key, the keywords are sent to the search engine, where they are processed by an algorithm that retrieves related results from the search index. Your query's results are displayed on a search engine results page, or SER.
Write down 5 check constraints. Check constraints should be meaningful.
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- A unique identifier for a data row that consists of more than one field is commonly called a: primary plus key composite primary key foreign key none of the aboveIn the following ER diagram, the Key for LEG_INSTANCE must include Airport_code City State Name Company Type_name Max_seats Date Seat_no AIRPORT Leg_no M CAN LAND N Airplane_id Number AIRPLANE_ TYPE TYPE 1 N AIRPLANE SEAT Airport_code Seat_no Scheduled_dep_time Total_no_of_seats Customer_name Scheduled_arr_time Scheduled_dep_time Dep_time N DEPARTS 1 N ASSIGNED DEPARTURE AIRPORT N ARRIVES N ARRIVAL AIRPORT RESERVATION Cphone Scheduled_arr_time Arr_time N N INSTANCE_OF N Instances Number Airline Weekdays Restrictions Amount Code No_of_avail_seats LEG_INSTANCE Date Leg_no FLIGHT LEG N LEGS FLIGHT 1 FARES N FARE Notes: A LEG (segment) is a nonstop portion of a flight A LEG_INSTANCE is a particular occurrence of a LEG on a particular date.SUPPLIER PRODUCT ProductCode ProductnName unitPrice SupCode supCode (Number, 3) SupName (text, 20) АВC LLC (Number, 10) [Char(10)] (>0) 1111111 Calculator 10 111 111 2222222 Notebook 2.5 777 222 ХҮX LLC 3333333 Book-AI 20 222 3333 PQR LLC 4444444 Pen -2.0 222 222 AXL LLC 5555555 Pencil .500 111 Eraser .500 222
- The following three tables make up a simple reservation system for a small campground. The database should allow for a camper to make multiple reservations for future dates and for a camping spot to have several reservations for upcoming visits. Table: Camper CAMPER_NUMBER 1000 1001 1002 1003 CAMPER_LAST_NAME Jones Schmidt Williams Cooper CAMPER_FIRST_NAME Jamie Pat Clifford Amanda CAMPER_ADDRESS 1278 Essex Pl 4954 Spangled Way 956 Segull Lane P. O. Box 998877 CAMPER_CITY El Paso Portland Portsmouth Birmingham AL CAMPER STATE TX ME OH CAMPER_ZIP_CODE 45251 79919 4108 45662 CAMPER_DRIVERS_LICENSE J1998743-98 87632434 WIL885123 765A876B897 CAMPER_EMAIL jjones@somewhere.com patwonderfu341@nowhere.net williams98342@foomail.com coopera@nowhere.net Table: Spot SPOT NUMBER 101 102 103 104 The Pines The Glade Teardrop Spot Tent In Trees SPOT_NAME SPOT LENGTH 55 50 20 0 SPOT_PULLTHRU 1 0 0 0 SPOT_ELECTRIC AMPS 50 50 20 0 SPOT WATER 1 1 1 1 SPOT SEWER 1 1 0 SPOT_RATE_WEEKDAY 35 33 12…PK Cus CODE PK INV NUMBER PK,FK1 INV NUMBER LINE NUMBER HEDenerates contains PK CUS LNAME CUs FNAME CUs INITIAL CUS AREACODE CUS PHONE CUS BALANCE FK1 CUS CODE INV DATE P CODE LINE UNITS LINE PRICE FK2 is found in VENDOR PRODUCT PK V CODE PK P CODE V NAME v CONTACT V AREACODE V PHONE V_STATE V ORDER P DESCRIPT P INDATE P_QOH P MIN P PRICE DISCOUNT FK1 V CODE upplies Write a SQL query to list the product code, vendor code, and vendor name for all products and includes those vendors with no matching products. Y CODE- PRODUCTY CODEUse the university schema for the following questions student takes ID ID course id sec id name dept_name tot ged semester vear grade section course course id sec id department course id advisor title dept_name credits dept name s id semester Year building room number time slot id building budget time_slot time slot id day start time end time prereq instructor classroom couTse id grereg id ID building room_number name dept_name salary сараcity teaches ID course id sec id semester year Figure 2.9 Schema diagram for the university database. Use the online SQLite tool from db-book.com to write SQL statements for each of the questions below. Paste your solution SQL statement under each question and upload the document to Canvas. 1. Display the name and total institution credits taken (not tot_cred which includes transfer credits) of students that do not have an assigned advisor (across all years). a. Hint: link takes with courses and student, for students not in advisor, project the name…
- 5. EMP table has records as follows: EMP_NUM EMP_TITLE EMP_LNAME EMP_FNAME EMP_INITIAL Kolmvcz George Lewis Rhonda Rhett Vandam 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 Mr. Ms. Mr. Ms. Mr. Mr. Mrs. Mr. Mr. Mr. Mrs. Mr. Mr. Ms. Ms. Mrs. Mr. Jones Lande Williams Smith Diante Employee Rhonda Lewis Rhett Vandam Jeanine Jorae Wiesenbach Paul Smith Genkazi Washington Johnson Smythe Brandon Saranda Smith Anne John Robert Anne Jones John Lange Jeanine Smith Jorge Diante George Smith Leiahla Genkazi Rupert Washington Edward Johnson Melanie Smythe Marie Brandon Hermine Saranda George Smith George Leighla Rupert Edward Melanie Marie Hermine George D G Manager George Kolmvcz George Kolmvcz George Kolmvcz Robert Williams Robert Williams Robert Williams Paul Wiesenbach Paul Wiesenbach Robert Williams George Kolmvcz Robert Williams Paul Wiesenbach Robert Williams Paul Wiesenbach ZAOXO xx wwa. M P D K D R K W E E P G R EMP_DOB 1942-06-15 00:00:00 1965-03-19 00:00:00…ERD:- PK CHECKOUT Check Num FK1 Book_Num FK2 Pat_ID Check Out Date Check_Due Date Check_In_Date PK BOOK Book Num Book Title Book_Year Book_Cost Book_Subject FK1 Pat_ID -H- PATRON PK Pat ID Pat_FName Pat_LName Pat_Type WRITES PK,FK1 Book Num PK,FK2 Au ID AUTHOR PK AU ID Au_FName Au_LName Au_BirthYearTable name: ADVISORS ADVISORID ADVISORNAME A102 Sami A103 Alice A104 Suad A105 Tamil A101 Arun Table name: DEPARTMENTS DEPTID DEPTNAME D102 ELC D101 IT D103 BSD D104 ENG Table name: STUDENTS STUDENTID STUDENTNAME DOB GENDER ALLOWANCE DEPTID ADVISORID STUDENTLEVEL AGE Hisham 6/1/1999 Male 90 D102 S103 A102 Level 1 22 12/30/1994 Female 45 D103 S102 Sara A104 Diploma 27 S101 Salim 6/1/1999 Male 45 | D103 A104 Diploma 22 5107 Khalil 5/6/1995 Male 45 D101 A101 Blech 26 45 | D104 Advanced Diploma S109 Said 10/15/1992 Male A101 29 5/1/1995 Male 45 D101 90 D104 5100 Ahmad BTech Advanced Diploma A103 26 4/5/1998 Male 2/23/1992 Female 9/12/1999 Female S104 Faisal A101 23 0 D102 45 D102 S105 Fatima 90 A102 Level 2 29 S106 Arwa A102 Level 3 22 S108 Ibtisam 8/13/1991 Female 90 D103 A104 Diploma 30 Write the SQL statement for the following: 1. Using the ON clause, display the advisor name and student name for all students in the BTech level 2. Display the student name, gender and department name of…
- estion Completion Status: AIRPORT FLIGHT AIRPORTCODE FLIGHTNUM FK AIRPORT1 CUSTOMER AIRPOR NAME DTIME CUSTOMERNUM CITY DDATE FIRSTNAME ATIME ADATE DESTINATIONAIRPORT PRICE AIRPLANENUM(FK) AIRPORTCODE(FK) STATE MIDDLENAME LASTNAME 3. STREETNUMBER STREETNAME CITY FK AIRPORT I STATE PHONE 1. FK AIRPLANE FK_FLIGHT FK CUSTOMER AIRPLANE AIRPLANENUM PAYMENT FLIGHTNUM(FK AIRPLANENAME CUSTOMERNUM(FK) CAPACITY CREDITCARDTYPE AIRPORTCODE(FK) CREDITCARDNUM BOOKDATE HOLDDATE EXPIREDHOLDDATE A. 1 How many primary key in the Flight entity? B.5 How many tables in the system can Customer table retrieve data from? C. 4 How many attributes in the Airport Table? D.5 How many tables in the system? E. 5 How many relationships shown in the system? Click Save and Submit to save and submit. Click Save All Answers to save all ansuwers.A real Estate Company has in its poššession a long list of landlords and the rent cost of their two bedroom apartments, as shown on table 1. There is the need for an Application program that will allow a user at the company to load the said list into a computer program, i.e. the list of landlords and the cost of rent. The app must also allow users to search for apartments they can afford. Apart from the list in the table, the App should be able to take as input the maximum amount a tenant is willing to spend on a two-bedroom apartment and then display a list of landlords whose apartments can be rented with that amount. Table 1: Landlords and Cost of rent Landlord Ama Dua Ali Dulon John Togbe Abena Nyame Kofi Duku Cost of rent (GHC) 800.00 950.00 2,500.00 600.00 2,300.00Member ID 1582 2587 3549 9536 2567 2154 3265 8765 3259 6540 First Name Mara Philip Kathleen Sau Shanice Chase Tommie Dorcas Angel Weston BookingID 1 2 3 4 5 6 7 8 Table 1: Member Last Name Gender Age Female 25 Male 36 Female 25 United States Female 25 United States Hashimoto Gent Hanner Pfau Mccrystal Karner Jia Darity Sanor Martina Room Room 15 Room 25 Room 1 Room 15 Room 5 Room 21 Room 3 Room 8 Date 29-Dec-2020 9-Dec-2021 3-Mar-2019 4-Sep-2021 13-Feb-2021 6-May-2021 10-Nov-2020 4-Apr-2022 Table 2: Booking Days 2 4 6 5 10 6 5 Female 36 Male 37 Male 26 Female 37 Male 24 Male 23 4 Table 3: Make MemberID 3549 9536 6540 2154 2567 2154 3265 1582 $150.00 $80.00 $120.00 $300.00 Country Uganda France 3 4 China Australia United States United States Cost per day $200.00 $80.00 $80.00 $150.00 5 6 7 8 France China BookingID 1 2 Joined Date 16-Aug-2020 21-May-2015 12-Dec-2017 16-Aug-2019 16-Aug-2020 1-Jan-2021 29-Dec-2018 21-May-2019 4-Mar-2019 1-Feb-2022 Status Paid Paid Pending Paid Pending Paid…