How can SQL DB2 users learn about security and access control?

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If you use SQL DB2 as your database management system, you need to know how to protect your data and grant access to authorized users. Security and access control are essential skills for any SQL DB2 user, whether you are a developer, administrator, analyst, or auditor. In this article, you will learn about some of the key concepts and features of SQL DB2 security and access control, and how you can use them to secure your database.

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1 Authentication and authorization

Authentication is the process of verifying the identity of a user or application that tries to access the database. Authorization is the process of determining what level of access and privileges a user or application has on the database objects and data. SQL DB2 supports various authentication methods, such as operating system, Kerberos, LDAP, or certificates. SQL DB2 also provides a flexible and granular authorization model, based on roles, groups, and privileges. You can assign different roles and privileges to users and applications, depending on their functions and needs. For example, you can grant the DBADM role to a database administrator, the DATAACCESS role to a data analyst, or the SECADM role to a security auditor.

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Mohammad Ghaheri

Data Solutions Director, BI & Data Culture Consultant
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Authentication and authorization are two related but different concepts in data security. Authentication is the process of verifying the identity of a user or entity that tries to access a system or resource. Authorization is the process of granting or denying access to specific resources or functions, based on the authenticated user's permissions, roles, or privileges. For example, when you log in to a website, you usually need to provide your username and password. This is authentication, as the website checks if you are who you claim to be. After you log in, you may see different options or features depending on your account type. This is authorization, as the website determines what you can or cannot do based on your account type.

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Mohammad Ghaheri

Data Solutions Director, BI & Data Culture Consultant
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Authentication and authorization are two related but different concepts in data security. Authentication is the process of verifying the identity of a user or entity that tries to access a system or resource. Authorization is the process of granting or denying access to specific resources or functions, based on the authenticated user's permissions, roles, or privileges. For example, when you log in to a website, you usually need to provide your username and password. This is authentication, as the website checks if you are who you claim to be. After you log in, you may see different options or features depending on your account type. This is authorization, as the website determines what you can or cannot do based on your account type.

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2 Encryption and masking

Encryption is the process of transforming data into an unreadable form, using a secret key or algorithm. Encryption protects data from unauthorized access, both at rest and in transit. Masking is the process of hiding or replacing sensitive data, such as credit card numbers or personal information, with dummy or random values. Masking protects data from exposure, while preserving its usability and format. SQL DB2 supports various encryption and masking options, such as native encryption, transparent data encryption, column-level encryption, row-level encryption, data-in-motion encryption, or data masking. You can use these options to encrypt and mask your data at different levels and stages, such as the tablespace, the table, the column, the row, the backup, the restore, or the query.

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Mohammad Ghaheri

Data Solutions Director, BI & Data Culture Consultant
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Encryption and masking are two data security techniques that protect data from unauthorized access or exposure. However, they have some differences, such as: ? Encryption transforms data into an unreadable format using algorithms and keys, while masking replaces data with similar-looking but fake data. ? Encryption is reversible, meaning that the original data can be restored using the correct key, while masking is irreversible, meaning that the original data cannot be recovered from the masked data. ? Encryption is usually applied to the whole data set or file, while masking is usually applied to specific data fields or elements.

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3 Auditing and monitoring

Auditing is the process of recording and reporting the activities and events that occur on the database. Auditing helps you track and verify who did what, when, where, and how on the database. Monitoring is the process of collecting and analyzing the performance and health metrics of the database. Monitoring helps you optimize and troubleshoot your database operations and resources. SQL DB2 provides various auditing and monitoring tools, such as audit policies, audit trails, audit reports, event monitors, snapshot monitors, table functions, or performance dashboards. You can use these tools to audit and monitor your database security and access control, such as authentication failures, authorization violations, encryption errors, masking rules, or privilege changes.

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Mohammad Ghaheri

Data Solutions Director, BI & Data Culture Consultant
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Auditing and monitoring are two data security techniques that check and verify the compliance and performance of a system or process. However, they have some differences, such as: ? Auditing is done by an external and independent party, while monitoring is done by an internal and responsible party. ? Auditing is done periodically and retrospectively, while monitoring is done continuously and proactively. ? Auditing is done to validate and evaluate the monitoring process, while monitoring is done to detect and prevent the risks and errors.

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4 Security best practices

Security and access control are essential for using the right features and tools, as well as following the best practices and guidelines. To design and implement a secure and effective security and access control strategy for your database, you should use strong and complex passwords that are changed regularly. Additionally, you should use the least privilege principle to grant only the minimum required access and privileges to your database users and applications. Roles and groups are also important for managing authorization, while encryption and masking can protect sensitive data at rest or in transit. Auditing, monitoring, security patches, and updates are also necessary to detect any security breaches or incidents, as well as keep your database software up to date. By learning these concepts and features, you can enhance your SQL DB2 security and access control skills to protect your database from any threats or risks.

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5 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

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How can SQL DB2 users learn about security and access control?

1

2

3

4

5

1 Authentication and authorization

2 Encryption and masking

3 Auditing and monitoring

4 Security best practices

5 Here’s what else to consider

Programming

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How can SQL DB2 users learn about security and access control?

1

2

3

4

5

1 Authentication and authorization

2 Encryption and masking

3 Auditing and monitoring

4 Security best practices

5 Here’s what else to consider

Programming

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