import{_ as t}from"./chunks/PageInfo.vue_vue_type_script_setup_true_lang.3a495ef9.js";import{_ as i,o as s,c as l,H as o,k as a,a as r,Q as c}from"./chunks/framework.575f3c30.js";import"./chunks/commonjsHelpers.725317a4.js";const y=JSON.parse('{"title":"CIS105: Computer Applications & Information Systems Lect. 18","description":"","frontmatter":{},"headers":[],"relativePath":"academic/cis105/cis105-l18-lecture-note.md","filePath":"academic/cis105/cis105-l18-lecture-note.md","lastUpdated":1726415834000}'),n={name:"academic/cis105/cis105-l18-lecture-note.md"},u=a("h1",{id:"cis105-computer-applications-information-systems-lect-18",tabindex:"-1"},[r("CIS105: Computer Applications & Information Systems Lect. 18 "),a("a",{class:"header-anchor",href:"#cis105-computer-applications-information-systems-lect-18","aria-label":'Permalink to "CIS105: Computer Applications & Information Systems Lect. 18"'},"")],-1),d=c('Chapter 18: Databases
Housekeeping:
- Zoom Office Hours: Tuesday April 23rd and 25th, no class starting today.
18.1: Datase Overview
- Column = Field
- Tables hold database data
- DBMS
- Oracle
18.2: Database Structure
- Entity Relationship Modeling (ERM): a database-modeling method used to construct a theoretical and conceptual representation of data to produce a schema.
- Tables
- Reports
- Queries
- Forms
- DBAs still need to know the business.
18.3: Business Database Advantages
- Data Validation
- No Errors + No Repeats = Data Integrity
- GIGO: Garbage-in-Garbage-Out
18.4: Structured Query language
- Most widely used query language
- SQL Clauses for updating fields:
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