Glue Crawler is a feature that automatically infer database and table schema from your source data then stores the associated metadata in the AWS Glue Data Catalog.
Go to the AWS Glue Console.
In the left navigation menu, click Crawlers.
On the Crawlers page, click Create a crawler.

Specify crawler’s name, click Next.
On the Choose data sources and classifiers screen, specify the following information, and then click Next.
On Configure security settings, choose your datalake role from the Existing IAM role, click Next.
Choose your Standardize database.
On the Crawler schedule, leave the frequency On demand, click Next.
Review the crawler details, click Create crawler.

Go to the AWS Glue Console.
In the left navigation menu, click Crawlers.
On the Crawlers page, click Create a crawler.

Specify crawler’s name, click Next.
On the Choose data sources and classifiers screen, specify the following information, and then click Next.
On Configure security settings, choose your datalake role from the Existing IAM role, click Next.
Choose your Standardize database.
On the Crawler schedule, leave the frequency On demand, click Next.
Review the crawler details, click Create crawler.
