sample inventory database design

Tags: how transaction control performs OTT connections based on STR hotspot needs1. Design Essentials related to the column family database The column family database should be a sparse and multidimensional map beforehand In a column family database, the columns owned by each row of data can be different

I. System of privileges This day will be about a basic database based on the Rights management system design, at the end of the course of this day will tell the "left-right value algorithm for the implementation of infinite Classification" How to optimize the "system menu" structure and end. Today's content is the same as the basic framework of the previous few days. They all belong to the basics, and ther

(Tbl_leave) Field name data type remarks leave_id int leave number, primary key user_id int leave person number user_name varchar2 (+) leave name leave_type varchar2 (+) leave type (sick leave, leave) Leave_reason varchar2 (+) reasons for leave start_date date start date

Tags: a primary table nbsp FOREIGN key constraint learning one-to-one IMG sample groomingTo do a project, must be the database design! In the learning stage, the basic is a single table. However, in the actual development process, one-to-many, many-to-many tables everywhere! Simple collation, one-to-many, many-to-many table how to

. Hospitalname = "Huaxi Hospital"; Data. Certificate = "XXXXX"; Data. Createtime = DateTime.Now.ToString (); Data. Department = "Facial branch"; Data. Doctor = "XXX"; Data. Sex = "male"; Data. Symptom = "XXXXXX"; Data. Diagnosisconclusion = "XXXXXX"; Data. Remark = "XXXXX"; String connstr = "Your MySQL connection string"; using (IDbConnection conn =new mysqlconnection (connstr)) {var res