manages 主宝 BilingRate PROJECT EMPLOYEE 04 ProjectiD 04 assigned to- EmpD EmpName 手 runs ProjectTtle Convert the E-R dlagrams to relatlonal schema and show: • Primary Keys (using underline) • Forelgn Keys (using dotted underline) • Referentlal Integrity
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Max Function
Statistical function is of many categories. One of them is a MAX function. The MAX function returns the largest value from the list of arguments passed to it. MAX function always ignores the empty cells when performing the calculation.
Power Function
A power function is a type of single-term function. Its definition states that it is a variable containing a base value raised to a constant value acting as an exponent. This variable may also have a coefficient. For instance, the area of a circle can be given as:
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- The relational schema shown below is part of a hospital database. The primary keys are highlighted in bold. Patient (patientNo, patName, patAddr, DOB)Ward (wardNo, wardName, wardType, noOfBeds)Contains (patientNo, wardNo, admissionDate)Drug (drugNo, drugName, costPerUnit)Prescribed (patientNo, drugNo, unitsPerDay, startDate, finishDate) for CONTAINS nad PRESCRIBED table , which one is primary key and how to create table ?The relational schema shown below is part of a hospital database. The primary keys are highlighted in bold. Patient (patientNo, patName, patAddr, DOB)Ward (wardNo, wardName, wardType, noOfBeds)Contains (patientNo, wardNo, admissionDate)Drug (drugNo, drugName, costPerUnit)Prescribed (patientNo, drugNo, unitsPerDay, startDate, finishDate) Formulate the following SQL statements: a) Find the names of all the patients being prescribed ‘Morphine’.b) What is the total cost of Morphine supplied to a patient called ‘John Smith’?c) For each ward that admitted more than 10 patients today, list the ward number, ward type and number of beds in each ward.Database Schema The schema for the Ch07_FACT database is shown below and should be used to answer the next several problems. Click this image to view it in its own tab. FIGURE P7.56 THE CH07_FACT ERD CHECKOUT PATRON PK Check Num PK Pat ID FK1 Book_Num FK2 Pat_ID Check_Out_Date Check_Due_Date Check_In_Date >0-----H- Pat_FName Pat LName Pat_Type BOOK AUTHOR PK Book_Num PK Au ID Book_Title Book_Year Book_Cost Book_Subject FK1 Pat_ID Au_FName Au_LName Au_BirthYear WRITES PK,FK1 Book Num PK,FK2 Au ID The CIS Department at Tiny College maintains the Free Access to Current Technology (FACT) library of e-books. FACT is a collection of current technology e-books for use by faculty and students. Agreements with the publishers allow patrons to electronically check out a book,
- true /false The system-defined database used as a template for all “to be created” databases is the tempdb database. The entire contents of this database, including database options, are copied to the new database. Thus, if you modify this database, all databases created afterward will inherit those changes. OUTER JOIN types return only non-matching tuples. When we create a primary key (PK) some Database Management Systems (DBMS) automaticallly create a Foreign Key constraint on the attributes of the PK. SQL Server DBMS is one of these DBMSs. If a relation has more than one candidate key, we can implement this by creating a Primary Key constraint for one of the candidate keys, and a UNIQUE constraint for each and every one of the alternate keys. Using the Query Editor Window, “select TOP 1000 Rows” retrieves the first 1000 tuples of a relation (assuming that the relation has 1000 or more tuples). If there is…15. Circle all areas that break the referential integrity constraint. (8 Points) Not a Relational Table EmpID EmpInfo EmpInfo EmpPhone 0001 Joe 0002 Sue 0001 Joe 0004 Pat 0005 Mike M FMF M x234 x345 x234 x567, x789 x678 EmpBdate 1/11/1985 2/7/1983 1/11/1985 3/8/1971 a long time agoThe relational schema shown below is part of a hospital database. The primary and foreign keys are highlighted in bold. Patient (patientNo, patName, patAddr, DOB)Ward (wardNo, wardName, wardType, noOfBeds)Admission (patientNo, wardNo, admissionDate)Drug (drugNo, drugName, costPerUnit)Prescribed (patientNo, drugNo, unitsPerDay, startDate, finishDate) Write SQL queries based on the hospital database given above: 1. Create the above tables together with its constraints. 2. Insert some data into the tables to check that the tables created are correct. No limit on how many rows you want to add. Insert Syntax:insert into table_namevalues (col1_value, col2_value, etc.); 3. List all the patients’ details, alphabetically by name. IF YOU WANT SOME CHALLENGE4. List all the patients admitted today. (Join between Patient and Admission table)
- Consider the following schema for a company database and answer the following questions: DEPARTMENT Dname Dnumber Mgr_ssn Mgr_start_date M EMPLOYEE Fname Minit Lname Ssn Bdate Address Sex Salary Dno WORKS ON Essn Pno Hours M PROJECT Pname Pnumber Plocation Q1//create all tables of this schema and apply any necessary constraints Q2// Write SQL statements that carry out the following tasks: 1-alter the employee table to add column city of 20 characters. 2- alter the employee table to apply the following business rule The minimum salary is 3000 and maximum salary is 10000 3- insert sample data in each table . 4- display a list of each employee SSN, Name and Salary. 5- display a list of each employee SSN , Name and Salary for employees working in department no 2.Write appropriate SQL DDL statements for declaring the database "Employee", assign admin privilege to user "AMAL" Write appropriate SQL DDL statements for declaring the table PERSONS. Specify all constraints: Field Null key PersonID No PRIMARY No LastName varchar(30) FirstName varchar(30) No Address varchar(50) YES City varchar(30) YES Type intConsider the following schema for a company database and answer the following questions: DEPARTMENT Dname Dnumber Mgr_ssn Mgr start date M EMPLOYEE Fname Minit Lname Ssn Bdate Address Sex Salary Dno M WORKS ON Essn Pno Hours M PROJECT Pname Pnumber Plocation Q1//create all tables of this schema and apply any necessary constraints Q2// Write SQL statements that carry out the following tasks: 1-alter the employee table to add column city of 20 characters. 2- alter the employee table to apply the following business rule The minimum salary is 3000 and maximum salary is 10000 3- insert sample data in each table. 4- display a list of each employee SSN , Name and Salary. 5- display a list of each employee SSN, Name and Salary for employees working in department no 2.
- name PERSON address salary fee EMPLOYEE STUDENT thesis RESEARCH TEACHING POST GRAD UNDER GRAD Year = 4 FINAL YEAR LECTURER TUTOR SUPERVISOR project courseno PART II: University Database in MYSQL • Create a database and its tables and constraints based on the relational model of PART I. • You can use my slides and any other resources to complete this exercise. • Submit the SQL statements you used to create the database and its tables (you can copy/paste directly from the mysql console).Q2/ Map your ER into a relational schema. All constraints must be included: Primary keys (PK) highlighted, foreign keys (FK) well referring to their PK, unique not null and other constraints also specified. Name PUBLISHER Phone Address publish Author_id Book_id M BOOK AUTHOR Has Titele M Name Date_out Loan Due_date phone f name I name BORROWER address Card id F_nameCan composite keys include composite attributes?
