user

Understanding of user concepts ：

Users are users , It can be an individual user , It can also be an institutional user .

Account

Understanding of account concept ：

Account , So-called “ zhang ”, Is the system basis “ zhang ” To store and manage data , Similar to bookkeeping 、 The concept of making accounts . for example , After a user uses the system, a lot of data belonging to the user will be generated , Then these data must be stored and managed according to different users , Therefore, it is necessary to manage these data separately , Record these data into an account （ Similar to accounting ）, This is the concept of account .

Accounts are used to classify 、 Collecting user behavior data , It was originally used by financial institutions to record the financial data of different accounts , Now Internet products also use the concept of account to classify and record user behavior data or business data .

The system can actually generate multiple accounts for a user , That is, a user can have multiple accounts , Different accounts record different data .

Take the banking system for example , A person opens an account in a bank for the first time , The system will generate a record of individual users , This record records the relevant attributes of this person （ User name 、 full name 、 Gender 、 nationality 、 marriage 、 Nationality, etc ）, At the same time, a record of the financial account will be generated , This record records the relevant attributes of financial accounts （ account number 、 Account type 、 balance 、 password 、 Head of household, etc ）. You can still open an account in this bank , Then the system will generate another financial account record , The result is that there is only one user record about you in the system , But there are two financial account records .

however , Many times, system designers or developers , Confuse users with accounts , Therefore, users and accounts of many systems now have the same concept . A user record records the user name 、 full name 、 Gender 、 account number 、 title of account 、 Password and all other information , This is not reasonable .

account number

The account number is the only identification of the account 、 Number 、 Code name .
Enterprise account （ Account refers to users ） The account number of the account opened .

Relationship

The relationship between user and account is one to many
Account and account are one-to-one
The relationship between user and account is one to many

In a software system , If users always have only one account , Then you can combine the attribute information of the account and the user into one record , At this point, you can simply equate users with accounts （ The essence is not the same concept ）.

Or to understand it like this ：
If a user in the system always has only one account , Then just design a table - Account form , Every account has an account （ That is, the owner of the account , That is, users ）, So the account information of the account will be recorded in the account table （ That is, user information ）, Account types can be divided into personal accounts 、 Institutional Accounts , In fact, it is to classify accounts by user type . In the business scenario where a user corresponds to multiple accounts , Accounts are classified according to business types . So such an account can also be called a personal account 、 Institutional Accounts , Similar accounts classified by business are called insurance accounts 、 Deposit account .

In fact, whether it's an insurance account 、 Deposit account , Or the so-called personal account 、 Institutional Accounts , Are accounts under a certain user name , Accounts belong to users , Therefore, these accounts can also be called user accounts .