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Topics to Learn

TypeORM Docs

  1. DataSource1
    1. intialize
    2. destroy
    3. .manager
    4. .getRepository()
    5. DataSourceOptions
      1. type
      2. extra
      3. entities
      4. migrations
      5. synchronize2
        1. schema:sync
      6. other and defenitions
      7. Example
    6. Entity3
      1. alternative table name
      2. @Column
      3. @PrimaryColumn()
      4. @PrimaryGeneratedColumn()
        1. uuid
      5. save()4
  1. DataSource

Footnotes

  1. Your interaction with the database is only possible once you setup a DataSource. TypeORM's DataSource holds your database connection settings and establishes initial database connection or connection pool depending on the RDBMS you use. ↩

  2. synchronize - Indicates if database schema should be auto created on every application launch. Be careful with this option and don't use this in production - otherwise you can lose production data. This option is useful during debug and development. As an alternative to it, you can use CLI and run schema:sync command. Note that for MongoDB database it does not create schema, because MongoDB is schemaless. Instead, it syncs just by creating indices. ↩

  3. Entity is a class that maps to a database table (or collection when using MongoDB). You can create an entity by defining a new class and mark it with @Entity(): ↩

  4. When you save entities using save it always tries to find an entity in the database with the given entity id (or ids). If id/ids are found then it will update this row in the database. If there is no row with the id/ids, a new row will be inserted. ↩