doc(cis105): add course lecture note for chapter 18 on epilogue for the entire course & database for course finalization of cis105 ! & add corresponded sidebar component for hyper link entries on switching doc pages

docs/.vitepress/config/sidebar.ts

@@ -241,6 +241,10 @@ export const sidebar: DefaultTheme.Config['sidebar'] = {
                 {
                     text: 'Lect 17: SQL Clauses: JOIN Query',
                     link: '/academic/cis105/cis105-l17-lecture-note'
+                },
+                {
+                    text: 'Lect 18: Databases',
+                    link: '/academic/cis105/cis105-l18-lecture-note'
                 }
             ],
         },

docs/academic/cis105/cis105-l18-lecture-node.md

@@ -0,0 +1,41 @@
+# CIS105: Computer Applications & Information Systems Lect. 18
+
+## Chapter 18: Databases
+
+> Housekeeping:
+>
+> - Zoom Office Hours: Tuesday April 23rd and 25th, **no class starting today.**
+
+### 18.1: Datase Overview
+
+- Column = Field
+  - AKA attributes
+- 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:
+  - `APPEND`
+  - `DELETE`
+  - `UPDTE`
+
+
+