Description

In this article, we're going to take the following card_product database table and describe it using GenRocket's DDL JSON Schema. This card_product table provides a good example because it utilizes most of the features of GenRocket's DDL JSON Schema.


Card Product Table

Below is an ER Diagram view of the card_product table that will be described in GenRocket's DDL JSON Schama.

GenRocket DDL JSON Schema for Card Product Table

[{
    "name": "card_product",
    "columns": [
        {
            "name": "id",
            "type": {
                "datatype": "bigint",
                "maxLength": "20",
                "nullable": false,
                "format": ""
            },
            "metadata": {
                "hint": "Card Product Id",
                "observedCharacters": "",
                "maxValue": "",
                "minValue": ""
            }
        },
        {
            "name": "pin",
            "type": {
                "datatype": "int",
                "maxLength": "10",
                "nullable": true
            },
            "metadata": {
                "observedCharacters": "",
                "maxValue": "",
                "minValue": ""
            }
        },
        {
            "name": "name_on_card",
            "type": {
                "name_on_card": "varchar",
                "maxLength": "50",
                "nullable": false,
                "format": ""
            },
            "metadata": {
                "hint": "Name On Card",
                "observedCharacters": "A..Z,a..z",
                "maxValue": "",
                "minValue": ""
            }
        },
        {
            "name": "card_number",
            "type": {
                "datatype": "varchar",
                "maxLength": "16",
                "nullable": false,
                "format": ""
            },
            "metadata": {
                "hint": "Card Number",
                "observedCharacters": "123456789",
                "maxValue": "",
                "minValue": ""
            }
        },
        {
            "name": "security_code",
            "type": {
                "datatype": "int",
                "maxLength": "10",
                "nullable": false,
                "format": ""
            },
            "metadata": {
                "hint": "Security Code",
                "observedCharacters": "",
                "maxValue": "8999999999",
                "minValue": "1000000000"
            }
        },
        {
            "name": "enable",
            "type": {
                "datatype": "tinyint",
                "maxLength": "1",
                "nullable": false,
                "format": ""
            },
            "metadata": {
                "hint": "",
                "observedCharacters": "",
                "maxValue": ""
            }
        },
        {
            "name": "date_issued",
            "type": {
                "datatype": "date",
                "maxLength": "",
                "nullable": false,
                "format": "yyyy-MM-dd HH:mm:ss"
            },
            "metadata": {
                "hint": "Issued",
                "observedCharacters": "",
                "maxValue": "",
                "minValue": ""
            }
        },
        {
            "name": "date_expired",
            "type": {
                "datatype": "date",
                "maxLength": "",
                "nullable": false,
                "format": "yyyy-MM-dd HH:mm:ss"
            },
            "metadata": {
                "hint": "Expired",
                "observedCharacters": "",
                "maxValue": "",
                "minValue": ""
            }
        },
        {
            "name": "date_activated",
            "type": {
                "datatype": "date",
                "maxLength": "",
                "nullable": true,
                "format": "yyyy-MM-dd HH:mm:ss"
            },
            "metadata": {
                "hint": "Activated",
                "observedCharacters": "",
                "maxValue": "",
                "minValue": ""
            }
        },
        {
            "name": "date_deactivated",
            "type": {
                "hint": "Deactivated",
                "maxLength": "",
                "nullable": true,
                "format": "yyyy-MM-dd HH:mm:ss"
            },
            "metadata": {
                "datatype": "int",
                "observedCharacters": "",
                "maxValue": "",
                "minValue": ""
            }
        }
    ],
    "primaryKey": [{"column": "id"}],
    "foreignKeys": [
        {
            "column": "card_type_id",
            "name": "card_type",
            "foreignColumn": "id"
        },
        {
            "column": "customer_account_id",
            "name": "customer_account",
            "foreignColumn":"id"
        }
    ]
}]
HTML