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1. Compare databases using dbschema how to#
2. Compare databases using dbschema pdf#
3. Compare databases using dbschema install#
4. Compare databases using dbschema code#

Let’s say we want each account to have a unique ID, so I’m gonna use an auto-increment id field for it.ĬREATE TABLE "accounts" ( "id" bigserial PRIMARY KEY, "owner" varchar NOT NULL, "balance" bigint NOT NULL, "currency" varchar NOT NULL, "created_at" timestamptz NOT NULL DEFAULT ( now ()) ) CREATE TABLE "entries" ( "id" bigserial PRIMARY KEY, "account_id" bigint NOT NULL, "amount" bigint NOT NULL, "created_at" timestamptz NOT NULL DEFAULT ( now ()) ) CREATE TABLE "transfers" ( "id" bigserial PRIMARY KEY, "from_account_id" bigint NOT NULL, "to_account_id" bigint NOT NULL, "amount" bigint NOT NULL, "created_at" timestamptz NOT NULL DEFAULT ( now ()) ) ALTER TABLE "entries" ADD FOREIGN KEY ( "account_id" ) REFERENCES "accounts" ( "id" ) ALTER TABLE "transfers" ADD FOREIGN KEY ( "from_account_id" ) REFERENCES "accounts" ( "id" ) ALTER TABLE "transfers" ADD FOREIGN KEY ( "to_account_id" ) REFERENCES "accounts" ( "id" ) CREATE INDEX ON "accounts" ( "owner" ) CREATE INDEX ON "entries" ( "account_id" ) CREATE INDEX ON "transfers" ( "from_account_id" ) CREATE INDEX ON "transfers" ( "to_account_id" ) CREATE INDEX ON "transfers" ( "from_account_id", "to_account_id" ) COMMENT ON COLUMN "entries".

We use the Table keyword to declare a table, and use the as keyword to set a short alias name for it. I’m gonna change the name of this diagram to "Simple bank".įirst we will have an accounts table.

Compare databases using dbschema pdf#

We can use the Export tool at the top to save this diagram as a PDF or PNG file, or generate SQL codes for Postgres, MySQL or SQL server.Īlright, now let’s modify this schema for our database. Then its corresponding diagram will show up on the right. On the left, we define the table structure with some simple syntax. OK, let’s start by going to dbdiagram.io and click Go to app. And finally generate SQL codes to create the schema in a target database engine of your choice, such as PostgreSQL, MySQL, or SQL server.Save the schema as a PDF or PNG diagram to share it with your team.Design a SQL database schema using dbdiagram.io.In the first lecture, we will learn about database design. This should happen within a transaction, so that either both accounts’ balance are updated successfully or none of them are. And third, perform a money transfer between 2 accounts.So every time some money is added to or subtracted from the account, an account entry record will be created. Second, record all balance changes to each of the account.

It will provide APIs for the frontend to do following things: The service that we’re going to build is a simple bank.

Compare databases using dbschema how to#

In this backend master class, we’re going to learn everything about how to design, develop, and deploy a complete backend system from scratch using PostgreSQL, Golang and Docker.

Compare databases using dbschema code#

3 How to write & run database migration in Golang 4 Generate CRUD Golang code from SQL | Compare db/sql, gorm, sqlx, sqlc 5 Write Go unit tests for db CRUD with random data 6 A clean way to implement database transaction in Golang 7 DB transaction lock & How to handle deadlock 8 How to avoid deadlock in DB transaction? Queries order matter! 9 Deeply understand Isolation levels and Read phenomena in MySQL & PostgreSQL 10 How to setup Github Actions for Go + Postgres to run automated tests 11 Implement RESTful HTTP API in Go using Gin 12 Load config from file & environment variables in Golang with Viper 13 Mock DB for testing HTTP API in Go and achieve 100% coverage 14 Implement transfer money API with a custom params validator in Go 15 Add users table with unique & foreign key constraints in PostgreSQL 16 How to handle DB errors in Golang correctly 17 How to securely store passwords? 18 How to write stronger unit tests with a custom go-mock matcher 19 Why PASETO is better than JWT for token-based authentication? 20 How to create and verify JWT & PASETO token in Golang 21 Implement login user API that returns PASETO or JWT access token in Go

Compare databases using dbschema install#

1 Design DB schema and generate SQL code with dbdiagram.io 2 Install & use Docker + Postgres + TablePlus to create DB schema.