comp4 unit6c lecture slides
TRANSCRIPT
![Page 1: Comp4 Unit6c Lecture Slides](https://reader035.vdocuments.mx/reader035/viewer/2022062903/577ccd5b1a28ab9e788c1b60/html5/thumbnails/1.jpg)
Introduction to Information and Computer ScienceDatabases and SQL
Lecture cThis material (Comp4_Unit6c) was developed by Oregon Health and Science University, funded by the Department of Health
and Human Services, Office of the National Coordinator for Health Information Technology under Award Number IU24OC000015.
![Page 2: Comp4 Unit6c Lecture Slides](https://reader035.vdocuments.mx/reader035/viewer/2022062903/577ccd5b1a28ab9e788c1b60/html5/thumbnails/2.jpg)
Databases and SQLLearning Objectives
• Define and describe the purpose of databases (Lecture a)• Define a relational database (Lecture a)• Describe data modeling and normalization (Lecture b)• Describe the structured query language (SQL) (Lecture c)• Define the basic data operations for relational databases and how to
implement them in SQL (Lecture c)• Design a simple relational database and create corresponding SQL
commands (Lecture c)• Examine the structure of a healthcare database component (Lecture
d)
2Health IT Workforce Curriculum Version 3.0/Spring 2012
Introduction to Information and Computer Science Databases and SQL
Lecture c
![Page 3: Comp4 Unit6c Lecture Slides](https://reader035.vdocuments.mx/reader035/viewer/2022062903/577ccd5b1a28ab9e788c1b60/html5/thumbnails/3.jpg)
SQL
• Used to manage and access database information
• ANSI, ISO and IEC standard– DBMS have custom extensions!
• Extensive language– We’ll look at a few basic commands
3Health IT Workforce Curriculum Version 3.0/Spring 2012
Introduction to Information and Computer Science Databases and SQL
Lecture c
![Page 4: Comp4 Unit6c Lecture Slides](https://reader035.vdocuments.mx/reader035/viewer/2022062903/577ccd5b1a28ab9e788c1b60/html5/thumbnails/4.jpg)
Example
• Make a space for the tables by creating the database– create database <name>
sql> create database contacts• To remove:
– drop database <name>
4Health IT Workforce Curriculum Version 3.0/Spring 2012
Introduction to Information and Computer Science Databases and SQL
Lecture c
![Page 5: Comp4 Unit6c Lecture Slides](https://reader035.vdocuments.mx/reader035/viewer/2022062903/577ccd5b1a28ab9e788c1b60/html5/thumbnails/5.jpg)
Create the Tables
• create table <name> (<column information>);• Column information consists of column names
and data types• Tables also have extra information• To remove:
– drop table <name>
5Health IT Workforce Curriculum Version 3.0/Spring 2012
Introduction to Information and Computer Science Databases and SQL
Lecture c
![Page 6: Comp4 Unit6c Lecture Slides](https://reader035.vdocuments.mx/reader035/viewer/2022062903/577ccd5b1a28ab9e788c1b60/html5/thumbnails/6.jpg)
SQL Basic Data Types
Data Type Descriptioninteger or int Whole numbers
float Floating point number
date Date
time Time
char (length) Fixed number of characters
varchar (length) Variable number of characters
6.14 Table: SQL Basic Data Types (PD-US, 2011).
6Health IT Workforce Curriculum Version 3.0/Spring 2012
Introduction to Information and Computer Science Databases and SQL
Lecture c
![Page 7: Comp4 Unit6c Lecture Slides](https://reader035.vdocuments.mx/reader035/viewer/2022062903/577ccd5b1a28ab9e788c1b60/html5/thumbnails/7.jpg)
Create Company Table
sql> create table company (id integer auto_increment,
-> name varchar(50), -> address varchar(50), -> city varchar(50), -> state char(2), -> primary key(id));
7Health IT Workforce Curriculum Version 3.0/Spring 2012
Introduction to Information and Computer Science Databases and SQL
Lecture c
![Page 8: Comp4 Unit6c Lecture Slides](https://reader035.vdocuments.mx/reader035/viewer/2022062903/577ccd5b1a28ab9e788c1b60/html5/thumbnails/8.jpg)
Create person tablesql> create table person(id integer auto_increment,
-> first_name varchar(50), -> last_name varchar(50), -> company_id integer, -> primary key(id),
-> foreign key(company_id) references company(id));
8Health IT Workforce Curriculum Version 3.0/Spring 2012
Introduction to Information and Computer Science Databases and SQL
Lecture c
![Page 9: Comp4 Unit6c Lecture Slides](https://reader035.vdocuments.mx/reader035/viewer/2022062903/577ccd5b1a28ab9e788c1b60/html5/thumbnails/9.jpg)
View Tables
6.15 Figure: SQL command and output (PD-US, 2011).
9Health IT Workforce Curriculum Version 3.0/Spring 2012
Introduction to Information and Computer Science Databases and SQL
Lecture c
![Page 10: Comp4 Unit6c Lecture Slides](https://reader035.vdocuments.mx/reader035/viewer/2022062903/577ccd5b1a28ab9e788c1b60/html5/thumbnails/10.jpg)
View Table Columns
6.16 Figure: View table columns (PD-US, 2011).
10Health IT Workforce Curriculum Version 3.0/Spring 2012
Introduction to Information and Computer Science Databases and SQL
Lecture c
![Page 11: Comp4 Unit6c Lecture Slides](https://reader035.vdocuments.mx/reader035/viewer/2022062903/577ccd5b1a28ab9e788c1b60/html5/thumbnails/11.jpg)
Same Basic Operations
• Add an entry• Retrieve an entry• Delete an entry• Modify an entry
11Health IT Workforce Curriculum Version 3.0/Spring 2012
Introduction to Information and Computer Science Databases and SQL
Lecture c
![Page 12: Comp4 Unit6c Lecture Slides](https://reader035.vdocuments.mx/reader035/viewer/2022062903/577ccd5b1a28ab9e788c1b60/html5/thumbnails/12.jpg)
Add an Entry
• Insert into <table> (columns) values (values);
• First add company entries:sql> insert into company (name, address, city, state) -> values ('Community Hospital, Inc.', '1312 Main',
'Portland', 'OR');sql> insert into company (name, address, city, state) -> values ('Oakland Providers LLC', '14 12th St.',
'Oakland', 'CA');
12Health IT Workforce Curriculum Version 3.0/Spring 2012
Introduction to Information and Computer Science Databases and SQL
Lecture c
![Page 13: Comp4 Unit6c Lecture Slides](https://reader035.vdocuments.mx/reader035/viewer/2022062903/577ccd5b1a28ab9e788c1b60/html5/thumbnails/13.jpg)
Add Persons• Now add people and their associated
companies:sql> insert into person (first_name, last_name, company_id) -> values ('Bill', 'Robeson', 1);sql> insert into person (first_name, last_name, company_id) -> values ('Walter', 'Schmidt', 2);sql> insert into person (first_name, last_name, company_id) -> values ('Mary', 'Stahl', 2);sql> insert into person (first_name, last_name, company_id) -> values ('Albert', 'Brookings', 1);sql> insert into person (first_name, last_name, company_id) -> values ('Catherine', 'David', 2);
13Health IT Workforce Curriculum Version 3.0/Spring 2012
Introduction to Information and Computer Science Databases and SQL
Lecture c
![Page 14: Comp4 Unit6c Lecture Slides](https://reader035.vdocuments.mx/reader035/viewer/2022062903/577ccd5b1a28ab9e788c1b60/html5/thumbnails/14.jpg)
Retrieve an Entry
6.17 Figure: Retrieve an entry (PD-US).
14Health IT Workforce Curriculum Version 3.0/Spring 2012
Introduction to Information and Computer Science Databases and SQL
Lecture c
![Page 15: Comp4 Unit6c Lecture Slides](https://reader035.vdocuments.mx/reader035/viewer/2022062903/577ccd5b1a28ab9e788c1b60/html5/thumbnails/15.jpg)
Add Sorting
6.18 Figure: Add sorting (PD-US, 2011).
15Health IT Workforce Curriculum Version 3.0/Spring 2012
Introduction to Information and Computer Science Databases and SQL
Lecture c
![Page 16: Comp4 Unit6c Lecture Slides](https://reader035.vdocuments.mx/reader035/viewer/2022062903/577ccd5b1a28ab9e788c1b60/html5/thumbnails/16.jpg)
Add Selectivity
6.19 Figure: Add selectivity (PD-US, 2011).
16Health IT Workforce Curriculum Version 3.0/Spring 2012
Introduction to Information and Computer Science Databases and SQL
Lecture c
![Page 17: Comp4 Unit6c Lecture Slides](https://reader035.vdocuments.mx/reader035/viewer/2022062903/577ccd5b1a28ab9e788c1b60/html5/thumbnails/17.jpg)
Retrieve from Multiple Tables
6.20 Figure: Retrieve from multiple tables (PD-US, 2011).
17Health IT Workforce Curriculum Version 3.0/Spring 2012
Introduction to Information and Computer Science Databases and SQL
Lecture c
![Page 18: Comp4 Unit6c Lecture Slides](https://reader035.vdocuments.mx/reader035/viewer/2022062903/577ccd5b1a28ab9e788c1b60/html5/thumbnails/18.jpg)
Create a Complex SQL Statement
6.21 Figure: Create a Complex SQL Statement (PD-US, 2011).
18Health IT Workforce Curriculum Version 3.0/Spring 2012
Introduction to Information and Computer Science Databases and SQL
Lecture c
![Page 19: Comp4 Unit6c Lecture Slides](https://reader035.vdocuments.mx/reader035/viewer/2022062903/577ccd5b1a28ab9e788c1b60/html5/thumbnails/19.jpg)
Delete an Entry
• delete from <table> where <constraints>;
• Remove Mary from contact list:sql> delete from person where first_name='Mary' and last_name='Stahl';
1 row affected
19Health IT Workforce Curriculum Version 3.0/Spring 2012
Introduction to Information and Computer Science Databases and SQL
Lecture c
![Page 20: Comp4 Unit6c Lecture Slides](https://reader035.vdocuments.mx/reader035/viewer/2022062903/577ccd5b1a28ab9e788c1b60/html5/thumbnails/20.jpg)
Modify an Entry
• update <table> set <column>=<data> where <constraints>;
20Health IT Workforce Curriculum Version 3.0/Spring 2012
Introduction to Information and Computer Science Databases and SQL
Lecture c
![Page 21: Comp4 Unit6c Lecture Slides](https://reader035.vdocuments.mx/reader035/viewer/2022062903/577ccd5b1a28ab9e788c1b60/html5/thumbnails/21.jpg)
New Company Name
6.22 Figure: Modify company name (PD-US, 2011).
21Health IT Workforce Curriculum Version 3.0/Spring 2012
Introduction to Information and Computer Science Databases and SQL
Lecture c
![Page 22: Comp4 Unit6c Lecture Slides](https://reader035.vdocuments.mx/reader035/viewer/2022062903/577ccd5b1a28ab9e788c1b60/html5/thumbnails/22.jpg)
New Company Name
6.23 Figure: New company name (PD-US, 2011).
22Health IT Workforce Curriculum Version 3.0/Spring 2012
Introduction to Information and Computer Science Databases and SQL
Lecture c
![Page 23: Comp4 Unit6c Lecture Slides](https://reader035.vdocuments.mx/reader035/viewer/2022062903/577ccd5b1a28ab9e788c1b60/html5/thumbnails/23.jpg)
Verify Again
6.24 Figure: Verify again (PD-US, 2011).
23Health IT Workforce Curriculum Version 3.0/Spring 2012
Introduction to Information and Computer Science Databases and SQL
Lecture c
![Page 24: Comp4 Unit6c Lecture Slides](https://reader035.vdocuments.mx/reader035/viewer/2022062903/577ccd5b1a28ab9e788c1b60/html5/thumbnails/24.jpg)
Databases and SQLSummary – Lecture c
• SQL is a language for creating, accessing and updating databases– Create tables– Insert data– Update data– Retrieve (select) data– Delete data
24Health IT Workforce Curriculum Version 3.0/Spring 2012
Introduction to Information and Computer Science Databases and SQL
Lecture c
![Page 25: Comp4 Unit6c Lecture Slides](https://reader035.vdocuments.mx/reader035/viewer/2022062903/577ccd5b1a28ab9e788c1b60/html5/thumbnails/25.jpg)
Databases and SQLReferences – Lecture c
References• Chen, P. P.-S. (1976). The Entity-Relationship Model - Toward a Unified View of Data. ACM Transactions on
Database Systems, 1(1).• International Organization for Standardization. (2008). Information technology -- Database languages -- SQL (No.
ISO/IEC 9075-(1-4,9-11,13,14)).• Kent, W. (1983). A simple guide to five normal forms in relational database theory. Communications of the ACM,
26(2).
Charts, Tables, Figures:• 6.14 Table: SQL Basic Data Types (PD-US, 2011).• 6.15 Figure: View tables (PD-US, 2011). • 6.16 Figure: View table columns (PD-US, 2011). • 6.17 Figure: Retrieve an entry (PD-US, 2011). • 6.18 Figure: Add sorting (PD-US, 2011). • 6.19 Figure: Add selectivity (PD-US, 2011). • 6.20 Figure: Retrieve from multiple tables (PD-US, 2011).• 6.21 Figure: Create a Complex SQL Statement (PD-US, 2011).• 6.22 Figure: Modify company name (PD-US, 2011). • 6.23 Figure: New company name (PD-US, 2011). • 6.24 Figure: Verify again (PD-US, 2011).
25Health IT Workforce Curriculum Version 3.0/Spring 2012
Introduction to Information and Computer Science Databases and SQL
Lecture c