[Improvement 1] Database Specification

[ScottCTD]

• Currently, we need to design 2 types of tables: user tables and bill tables.

User Table

Table Name: users

Table Specifications:

Column Name	Data Type	Notes
user_id	INT
user_name	'VARCHAR(10)'	The max user name length is 10
password	'VARCHAR(16)'	The max password length is 16
bill_id	INT	This is the main bill id of this user

Bill Table

Table Name: bill_{bill_id}

Side Note: We shouldn't use user_id as the bill_id because a user may have multiple bills (like many splitter bills)

Table Specifications:

Column Name	Data Type	Notes
entry_id	INT
date	'TIMESTAMP'
value	'DECIMAL(16, 2)'	We expect value to have 16 integer places and 2 decimal places
CURRENCY	CHAR(3)	As defined in ISO 4217, currency codes all have a length of 3
description	TEXT
from	TEXT
to	TEXT
location	TEXT
'split_bill_id'	'INT'	WIP

@Lei-Tin Please check these specifications and adjust your implementation if needed.

Any suggestions are appreciated.

[Lei-Tin]

Understood, will modify and PR in reading week.
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