```

</div>

## Create the App with a Single Model

We'll create the simplest first version of the app with a single **SQLModel** model first.

Later we'll improve it increasing security and versatility with **multiple models** below. 🤓

### Create Models

Import `SQLModel` and create a database model:

{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[1:11] hl[7:11] *}

.select2-selection--multiple .select2-search.select2-search--inline .select2-search__field{margin-top:8px}.select2-container--default .select2-selection--multiple.text-sm .select2-selection__choice,.text-sm .select2-container--default .select2-selection--multiple .select2-selection__choice{margin-top:.4rem}.select2-container--default.select2-container--focus .select2-selection--multiple,.select2-container--default.select2-container--focus .select2-selection--single{border-color:#80bdff}.select2-container--de...

        "Should be able to peek() first element multiple times", "A", peekingIterator.peek());
    assertEquals(
        "next() should still return first element after peeking", "A", peekingIterator.next());

    assertEquals("Should be able to peek() at middle element", "B", peekingIterator.peek());
    assertEquals(
        "Should be able to peek() middle element multiple times", "B", peekingIterator.peek());
    assertEquals(

		// 'proto=' which should precede right after `for=` if not
		// we simply ignore the values and return empty. This is in line
		// with the approach we took for returning first ip from multiple
		// params.
		if match := forRegex.FindStringSubmatch(proto); len(match) > 1 {
			if match = protoRegex.FindStringSubmatch(match[2]); len(match) > 1 {
				scheme = strings.ToLower(match[2])
			}
		}
	}

///

/// warning

You can declare multiple `File` and `Form` parameters in a *path operation*, but you can't also declare `Body` fields that you expect to receive as JSON, as the request will have the body encoded using `multipart/form-data` instead of `application/json`.

# Automatic Site Replication

This feature allows multiple independent MinIO sites (or clusters) that are using the same external IDentity Provider (IDP) to be configured as replicas. In this situation the set of replica sites are referred to as peer sites or just sites. When site-replication is enabled on a set of sites, the following changes are replicated to all other sites:

- Creation and deletion of buckets and objects

.select2-selection__arrow {\n  top: -.12rem;\n}\n\n.text-sm .select2-container--default .select2-selection--multiple,\nselect.form-control-sm ~ .select2-container--default .select2-selection--multiple {\n  min-height: calc(1.8125rem + 2px);\n}\n\n.text-sm .select2-container--default .select2-selection--multiple .select2-selection__rendered,\nselect.form-control-sm ~ .select2-container--default .select2-selection--multiple .select2-selection__rendered {\n  padding: 0 0.25rem 0.25rem;\n  margin-top: -0.1rem;\n}\n\n.text-sm...

    static final byte[] S8 = {
        (byte) 0x4b, (byte) 0x47, (byte) 0x53, (byte) 0x21, (byte) 0x40, (byte) 0x23, (byte) 0x24, (byte) 0x25
    };


    /*
     * Accepts key multiple of 7
     * Returns enc multiple of 8
     * Multiple is the same like: 21 byte key gives 24 byte result
     */
    static void E ( byte[] key, byte[] data, byte[] e ) throws ShortBufferException {
        byte[] key7 = new byte[7];

## Why is Erasure Code useful?

    }

    /**
     * encrypts an array where the length must be a multiple of 8
     */
    public byte[] encrypt(byte[] clearText) {

        int length = clearText.length;

        if (length % 8 != 0) {
            System.out.println("Array must be a multiple of 8");
            return null;
        }

        byte[] cipherText = new byte[length];