Example: if order was created on 10 Feb it would be billed/invoiced on the 1 March for the hours between 10 - 28 Feb and again on the 1 April etc, if cancelled anytime, same 'Pro-rata' logic as for the first month applies. Our invoicing is done on the first of every month for the previous month's usage and orders are billed per hour. Your Products Database can be super simple.
PRODUCT DATABASE IN SIMPLE INVOICES HOW TO
How to retrieve orders due for invoicing and determine the billing period? For a super simple invoice generator in Notion, you could create a single database with properties for each. Is it sensible to store invoice 'totals' in the db?Ĭurrently when invoice is produced, it's totals - :invoice/vat-amount, :invoice/total-inclusive and :invoice/total-exclusive are stored on the entity, but can be calculated from :invoice/items ? 2.
Start by creating a database folder: mkdir database Run the sqlite3 client and create an InvoicingApp.db file for your database in this new directory: sqlite3 database/InvoicingApp.
SQLite is going to be the database client of choice for this application. Invoice-item :invoice-item/description string For an invoicing application, a database is needed to store the existing invoices. Invoice :invoice/date instant date/time when invoice was created :order/invoice-date instant last invoice date :order/date instant order creation date/time Order :order/status keyword :active or :cancelled We use datomic for our db and clojure in the backend. We are in the process of redesigning and improving (normalising data, tuning preformance, eliminating complexity where possible) our billing system, and need help understanding best practices around storing vs calculating some values in ordering and invoicing processes.
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