fix: devcontainers and docs

Author: praisetompane

.DS_Store

@@ -0,0 +1,6 @@
+{
+    "name": "sql",
+    "image": "postgres:latest",
+    "workspaceMount": "source=${localWorkspaceFolder},target=/sql,type=bind,consistency=delegated",
+    "workspaceFolder": "/sql"
+}

.devcontainer/devcontainer.json

@@ -8,7 +8,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-lates
+    runs-on: ubuntu-latest
     steps:
       - name: "Check Repository"
         uses: actions/checkout@v4

.github/workflows/sql.yaml

@@ -0,0 +1,16 @@
+# authors
+
+
+# institutions
+
+
+# acronyms
+
+
+# places
+
+
+# urls
+
+
+# Mathematics Subject Classification – MSC2020

.spellcheck_exceptions_dictionary.txt

@@ -0,0 +1,12 @@
+Known implementations:
+    - TSQL
+    - PL/SQL
+    - mySQL
+    - PostgresSQL
+    - ...
+    
+    NB: Some of these are also the names of the Relational Database Management System(RDBMS)
+    see: https://github.com/praisetompane/mathematics/blob/main/03_mathematical_logic_and_foundations/5_relation.txt
+
+References:
+