Adding the first assignment using the .er format.

.gitignore

+*.swp
+
+*\.~lock\.*
\ No newline at end of file

HandsOn/assignment1/assignment1.er

+# Entities are declared in '[' ... ']'. All attributes after the entity header
+# up until the end of the file (or the next entity declaration) correspond
+# to this entity.
+[Team]
+*name
+city
+
+[City]
+*city_name
+
+[Coach]
+*coach_ID
+first_name
+last_name
+team
+
+[Player]
+*player_ID
+first_name
+last_name
+
+[Association]
+*player
+*city
+
+# Each relationship must be between exactly two entities, which need not
+# be distinct. Each entity in the relationship has exactly one of four
+# possible cardinalities:
+#
+# Cardinality    Syntax
+# 0 or 1         ?
+# exactly 1      1
+# 0 or more      *
+# 1 or more      +
+
+Team +--1 City
+Team 1--+ Coach
+Team 1--+ Player
+Team 1--* Association
+Player 1--* Association

README.md

+# 314 assignment standards
+
+## ERDs
+
+- ERDs will be written in the .er format using the [VScode ERD preview extension by kiashuu0123](https://github.com/kaishuu0123/vscode-erd/).
+  - This extension is simply a port to VScode of [BurntSushi's ERD schema for creating .er files](https://github.com/BurntSushi/erd), which is a wrapper for [graphviz's dot schema](https://www.graphviz.org/) (to my understanding).
+