---
template: reference
foo: bar
---

# Simple Types Schema

```
https://example.com/schemas/simpletypes
```

This is an example schema with examples for multiple types and their constraints.

| [Abstract](../abstract.md) | Extensible | [Status](../status.md) | Identifiable | Custom Properties | Additional Properties | Defined In                                         |
| -------------------------- | ---------- | ---------------------- | ------------ | ----------------- | --------------------- | -------------------------------------------------- |
| Can be instantiated        | No         | Experimental           | No           | Forbidden         | Permitted             | [simpletypes.schema.json](simpletypes.schema.json) |

# Simple Types Properties

| Property                                                      | Type      | Required     | Nullable | Defined by                                 |
| ------------------------------------------------------------- | --------- | ------------ | -------- | ------------------------------------------ |
| [integer_threes](#integer_threes)                             | `integer` | Optional     | No       | Simple Types (this schema)                 |
| [interger_constrained](#interger_constrained)                 | `integer` | Optional     | No       | Simple Types (this schema)                 |
| [interger_unconstrained](#interger_unconstrained)             | `integer` | Optional     | No       | Simple Types (this schema)                 |
| [number_constrained](#number_constrained)                     | `number`  | Optional     | No       | Simple Types (this schema)                 |
| [number_unconstrained](#number_unconstrained)                 | `number`  | Optional     | No       | Simple Types (this schema)                 |
| [string_date](#string_date)                                   | `string`  | Optional     | No       | Simple Types (this schema)                 |
| [string_email](#string_email)                                 | `string`  | Optional     | No       | Simple Types (this schema)                 |
| [string_hostname](#string_hostname)                           | `string`  | Optional     | No       | Simple Types (this schema)                 |
| [string_ipv4](#string_ipv4)                                   | `string`  | Optional     | No       | Simple Types (this schema)                 |
| [string_ipv6](#string_ipv6)                                   | `string`  | Optional     | No       | Simple Types (this schema)                 |
| [string_length](#string_length)                               | `string`  | Optional     | No       | Simple Types (this schema)                 |
| [string_pattern](#string_pattern)                             | `string`  | Optional     | No       | Simple Types (this schema)                 |
| [string_pattern_noexample](#string_pattern_noexample)         | `string`  | Optional     | No       | Simple Types (this schema)                 |
| [string_pattern_singleexample](#string_pattern_singleexample) | `string`  | Optional     | No       | Simple Types (this schema)                 |
| [string_unconstrained](#string_unconstrained)                 | `string`  | Optional     | No       | Simple Types (this schema)                 |
| [string_uri](#string_uri)                                     | `string`  | Optional     | No       | Simple Types (this schema)                 |
| [yesno](#yesno)                                               | `boolean` | **Required** | No       | Simple Types (this schema)                 |
| `*`                                                           | any       | Additional   | Yes      | this schema _allows_ additional properties |

## integer_threes

Guess what number is valid

`integer_threes`

- is optional
- type: `integer`
- defined in this schema

### integer_threes Type

`integer`

- minimum value: `2`
- maximum value: `4`
- must be a multiple of `3`

## interger_constrained

Just a whole number. I don't like fractions. Don't get too small

`interger_constrained`

- is optional
- type: `integer`
- defined in this schema

### interger_constrained Type

`integer`

- minimum value: `10`

## interger_unconstrained

Just a whole number. I don't like fractions.

`interger_unconstrained`

- is optional
- type: `integer`
- defined in this schema

### interger_unconstrained Type

`integer`

## number_constrained

Just a number. Don't get too big.

`number_constrained`

- is optional
- type: `number`
- defined in this schema

### number_constrained Type

`number`

- value must not be greater or equal than: `10`

## number_unconstrained

Just a number

`number_unconstrained`

- is optional
- type: `number`
- defined in this schema

### number_unconstrained Type

`number`

## string_date

A date-like string.

`string_date`

- is optional
- type: `string`
- defined in this schema

### string_date Type

`string`

- format: `date-time` – date and time (according to [RFC 3339, section 5.6](http://tools.ietf.org/html/rfc3339))

## string_email

An email-like string.

`string_email`

- is optional
- type: `string`
- defined in this schema

### string_email Type

`string`

- format: `email` – email address (according to [RFC 5322, section 3.4.1](https://tools.ietf.org/html/rfc5322))

## string_hostname

A hostname-like string.

`string_hostname`

- is optional
- type: `string`
- defined in this schema

### string_hostname Type

`string`

- format: `hostname` – Domain Name (according to [RFC 1034, section 3.1](https://tools.ietf.org/html/rfc1034))

## string_ipv4

An IPv4-like string.

`string_ipv4`

- is optional
- type: `string`
- defined in this schema

### string_ipv4 Type

`string`

- format: `ipv4` – IP (v4) address (according to [RFC 2673, section 3.2](https://tools.ietf.org/html/rfc2673))

## string_ipv6

An IPv6-like string.

`string_ipv6`

- is optional
- type: `string`
- defined in this schema

### string_ipv6 Type

`string`

- format: `ipv6` – IP (v6) address (according to [RFC 4291, section 2.2](https://tools.ietf.org/html/rfc4291))

## string_length

A string with minumum and maximum length

`string_length`

- is optional
- type: `string`
- defined in this schema

### string_length Type

`string`

- minimum length: 3 characters
- maximum length: 3 characters

### string_length Examples

```json
"bar"
```

```json
"baz"
```

## string_pattern

A string following a regular expression

`string_pattern`

- is optional
- type: `string`
- defined in this schema

### string_pattern Type

`string`

All instances must conform to this regular expression

```regex
^ba.$
```

- test example: [bar](https://regexr.com/?expression=%5Eba.%24&text=bar)
- test example: [baz](https://regexr.com/?expression=%5Eba.%24&text=baz)
- test example: [bat](https://regexr.com/?expression=%5Eba.%24&text=bat)

### string_pattern Known Values

| Value | Description                                           |
| ----- | ----------------------------------------------------- |
| `baa` | the sounds of sheeps                                  |
| `bad` | German bathroom                                       |
| `bag` | holding device                                        |
| `bah` | humbug!                                               |
| `bam` | a loud sound                                          |
| `ban` | don't do this                                     |
| `bap` | a British soft bread roll                             |
| `bas` | from ancient Egyptian religion, an aspect of the soul |
| `bat` | …out of hell                                          |
| `bay` | , sitting by the dock of the                          |

### string_pattern Examples

```json
"bar"
```

```json
"baz"
```

```json
"bat"
```

## string_pattern_noexample

A string following a regular expression

`string_pattern_noexample`

- is optional
- type: `string`
- defined in this schema

### string_pattern_noexample Type

`string`

All instances must conform to this regular expression (test examples [here](https://regexr.com/?expression=%5Eba.%24)):

```regex
^ba.$
```

## string_pattern_singleexample

A string following a regular expression

`string_pattern_singleexample`

- is optional
- type: `string`
- defined in this schema

### string_pattern_singleexample Type

`string`

All instances must conform to this regular expression

```regex
^ba.$
```

- test example: [bar](https://regexr.com/?expression=%5Eba.%24&text=bar)

### string_pattern_singleexample Example

```json
"bar"
```

## string_unconstrained

A simple string, without any constraints.

`string_unconstrained`

- is optional
- type: `string`
- defined in this schema

### string_unconstrained Type

`string`

### string_unconstrained Example

```json
"bar"
```

## string_uri

A URI.

`string_uri`

- is optional
- type: `string`
- defined in this schema

### string_uri Type

`string`

- format: `uri` – Uniformous Resource Identifier (according to [RFC3986](http://tools.ietf.org/html/rfc3986))

## yesno

`yesno`

- is **required**
- type: `boolean`
- defined in this schema

### yesno Type

`boolean`