---
sidebar_position: 6
sidebar_label: đ Features Summary
hide_table_of_contents: true
description: List that fastly summarizes all TinyORM features.
keywords: [c++ orm, tinyorm, features, summary, features summary]
---
# Features Summary
- [Summary List](#summary-list)
- [Showcase Images](#showcase-images)
## Summary List
The following list fastly summarizes all the `TinyORM` features.
- __simple database connections management__ đ§Ŧ
- database manager that helps with the database connections management
- `Orm::DB` facade class for nicer and shorter syntax
- MySQL, SQLite, and PostgreSQL support for all features
- multi-threading support đ
- __SSL__ connections support đ
- __impressive query builder__ đ§
- allows passing sub-queries and raw expressions practically everywhere, to column names, values, and to every SQL clause as select, where, joins, group by, having, order by đĨ
- a logical grouping that offers to wrap logical groups in parenthesis
- chunked results for lower memory footprint â¨
- raw methods for all SQL clauses
- all join types (left, right, cross, inner) and also join where clause support đ̤
- aggregate methods min, max, sum, increment, decrement, ...
- whereExists and exists methods for an existence queries
- transactions and pessimistic locking đ
- of course, insert, update, and delete SQL clauses support
- __correct QDateTime time zone__ using the `qt_timezone` connection configuration option đ
(returned QDateTime instances will have the correct time zone, and also works for an ORM)
- this feature allows you to set up the database server time zone to the UTC and all returned QDateTime instances will have the correct UTC time zone
- __clever ORM with all relation types support__ đ
- one-to-one, one-to-many, and many-to-many relation types (also inverse relationships)
- eager and lazy loading with custom select and constraints đ
- all query builder methods are proxied from the model instances and also from the relation instances back to the query builder đ¤¯ (everything that can be called on the query builder can also be called on the model and relation instances)
- clean active record pattern
- advanced features like timestamps, touching parent timestamps, __soft deleting__, default models, default model attributes, and attribute casting
- querying relationships existence/absence using the has, whereHas, and hasNested methods (using dot notation for selecting nested relationships _users.posts.comments_)
- __compiled database migrations and seeders__ đē
- create, update, drop, and rename database tables
- create, drop, and rename table columns
- extensive schema builder that allows creating of all possible column types
- terser syntax for creating foreign keys and foreign key constraints
- supports creating, and dropping column indexes (primary, unique, fulltext, spatial)
- __the `tom` console application with tab completion for all shells (pwsh, bash, zsh)__ đĨŗ
- scaffolding of models, migrations, and seeders
- impressive models scaffolding, every feature that is supported by models can be generated using the `tom make:model` cli command
- a huge amount of code is unit tested, currently __2796 unit tests__ đ¤¯
- C++20 only, with all the latest features used like concepts/constraints, ranges, smart pointers (no `new` keyword in the whole code đ), folding expressions
- qmake and CMake build systems support
- CMake FetchContent module support đ¤
- vcpkg support (also the vcpkg port, currently not committed to the vcpkg repository âšī¸)
- it's really fast, you can run 1000 complex queries in 500ms (heavily DB dependant, the PostgreSQL is by far the fastest) â
- extensive documentation đ
- ...
## Showcase Images
###### Tom console application
###### Passed all unit tests đĨŗ
#### TinyOrmPlayground
The [TinyOrmPlayground](https://github.com/silverqx/TinyOrmPlayground) project is my personal project where I have tested all the TinyORM database queries in the early development phases, currently, it executes ~1600 database queries across the whole TinyORM framework. Every query has a nice title header, is logged to the console, and is counted and measured (elapsed time). Every query also runs on all [supported databases](database/getting-started.mdx#introduction).
The TinyOrmPlayground project can be compiled in a single-threaded or multi-threaded mode. In the multi-threaded mode, every database connection runs in its own thread. At the end of every database connection is logged a connection summary and before an exit is logged the application summary. Whole TinyOrmPlayground application is configurable through the [src/configuration.hpp](https://github.com/silverqx/TinyOrmPlayground/blob/main/src/configuration.hpp) class.
###### TinyOrmPlayground single-threaded
###### TinyOrmPlayground multi-threaded