In Sql Server, what would the drawbacks and disadvantages be of using a primary key that is: Two Character Table Identifier + YEAR + MONTH + DAY + HOUR + MINUTE + MILLISECOND + random integer between ...
Let's assume you have a table groups and a table item. Each item belongs to exactly one group. It is an inherent part of that group. An item cannot exist outside of a group and it cannot be moved to ...
I am trying to put together an ER Diagram to design a fairly simple asset tag tracking/inventory management system for our servers/switches/UPS/etc. The top-level entity corresponds to the business ...
I copied this code from here: CREATE TABLE records( email TEXT REFERENCES users(email), lat DECIMAL, lon DECIMAL, depth TEXT, upload_date TIMESTAMP, comment TEXT, PRIMARY ...