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Segment Data Lakes provide a way to collect large quantities of data in a format that's optimized for targeted data science and data analytics workflows. You can read [more information about Data Lakes](/docs/connections/storage/data-lakes/) and learn [how they differ from Warehouses](/docs/connections/storage/data-lakes/comparison/) in Segment's Data Lakes documentation.
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> note "AWS Lake Formation"
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> note "Lake Formation"
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> You can also set up your Data Lakes using [Lake Formation](/docs/connections/storage/data-lakes/lake-formation/), a fully managed service built on top of the AWS Glue Data Catalog.
Copy file name to clipboardExpand all lines: src/connections/storage/data-lakes/lake-formation.md
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@@ -13,8 +13,8 @@ The security policies in Lake Formation use two layers of permissions: each reso
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For more information about security practices in Lake Formation, see Amazon's [Lake Formation Permissions Reference](https://docs.aws.amazon.com/lake-formation/latest/dg/lf-permissions-reference.html){:target="_blank"} documentation.
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## Configuring Lake Formation
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You can configure Lake Formation using the [`IAMAllowedPrincipals` group](#configuring-lake-formation-using-the-iamallowedprincipals-group) or by [using IAM policies for access control](#configuring-lake-formation-using-iam-policies). Configuring Lake Formation using the `IAMAllowedPrincipals` group is an easier method, recommended for those exploring Lake Formation. Setting up using IAM policies for access control is a more advanced setup option, recommended for those who want additional customization options.
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## Configure Lake Formation
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You can configure Lake Formation using the [`IAMAllowedPrincipals` group](#configure-lake-formation-using-the-iamallowedprincipals-group) or by [using IAM policies for access control](#configure-lake-formation-using-iam-policies). Configuring Lake Formation using the `IAMAllowedPrincipals` group is an easier method, recommended for those exploring Lake Formation. Setting up Lake Formation using IAM policies for access control is a more advanced setup option, recommended for those who want additional customization options.
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> info "Permissions required to configure Data Lakes"
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> To configure Lake Formation, you must be logged in to AWS with data lake administrator or database creator permissions.
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#### Existing databases
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1. Open the [AWS Lake Formation service](https://console.aws.amazon.com/lakeformation/){:target="_blank"}.
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2. Under **Data catalog**, select the **Settings** tab. Ensure the checkboxes under the **Default permissions for newly created databases and tables** are not checked.
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2. Under **Data catalog**, select **Settings**. Ensure the checkboxes under the **Default permissions for newly created databases and tables** are not checked.
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3. Under **Permissions**, select the **Data lake permissions** section. Click **Grant**.
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4. On the **Grant data permissions** page, select the `IAMAllowedPrincipals` group in the Principals section.
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5. In the **Database permissions** section, select the checkboxes for **Super** database permissions and **Super** grantable permissions.
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#### New databases
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1. Open the [AWS Lake Formation service](https://console.aws.amazon.com/lakeformation/){:target="_blank"}.
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2. Under **Data catalog**, select the **Settings** tab. Ensure the checkboxes under the**Default permissions for newly created databases and tables** are not checked.
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2. Under **Data catalog**, select **Settings**. Ensure the checkboxes under **Default permissions for newly created databases and tables** are not checked.
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3. Select the Databases tab and click **Create database**. On the **Create database** page:
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1. Select the **Database** button.
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2. Name your database.
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7. Click **Grant**.
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8. On the **Permissions** page, verify the `IAMAllowedPrincipals` group has "All" permissions.
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#### Verifying your configuration
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#### Verify your configuration
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To verify that you've configured Lake Formation, open the [AWS Lake Formation service](https://console.aws.amazon.com/lakeformation/){:target="_blank"}, select **Data lake permissions**, and verify the `IAMAllowedPrincipals` group is listed with "All" permissions.
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### Configure Lake Formation using IAM policies
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#### Existing databases
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1. Open the [AWS Lake Formation service](https://console.aws.amazon.com/lakeformation/){:target="_blank"}.
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2. Under **Data catalog**, select the **Settings** tab. Ensure the checkboxes under the **Default permissions for newly created databases and tables** are not checked.
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2. Under **Data catalog**, select **Settings**. Ensure the checkboxes under the **Default permissions for newly created databases and tables** are not checked.
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3. On the **Databases** page, select your database. From the **Actions** menu, select **Grant**.
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5. On the **Grant data permissions** page, select the `EMR_EC2_DefaultRole` (or `segment_emr_instance_profile`, if you configured your data lake using Terraform) and `segment-data-lake-iam-role` roles in the Principals section.
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6. In the **Database permissions** section, select the checkboxes for **Super** database permissions and **Super** grantable permissions.
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#### New databases
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1. Open the [AWS Lake Formation service](https://console.aws.amazon.com/lakeformation/){:target="_blank"}.
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2. Under **Data catalog**, select the **Settings** tab. Ensure the checkboxes under the **Default permissions for newly created databases and tables** are not checked.
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2. Under **Data catalog**, select **Settings**. Ensure the checkboxes under the **Default permissions for newly created databases and tables** are not checked.
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3. Select the Databases tab and click **Create database**. On the **Create database** page:
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