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Introducing Microsoft SQL Server 2019
Introducing Microsoft SQL Server 2019

Introducing Microsoft SQL Server 2019: Reliability, scalability, and security both on premises and in the cloud

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Profile Icon Kellyn Gorman Profile Icon Buck Woody Profile Icon Arun Sirpal Profile Icon Dustin Ryan Profile Icon James Rowland-Jones Profile Icon Dave Noderer Profile Icon Allan Hirt Profile Icon Mitchell Pearson +4 more Show less
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Introducing Microsoft SQL Server 2019

2. Enterprise Security

Securing sensitive data and staying compliant with industry regulations such as PCI-DSS (Payment Card Industry Data Security Standard) and GDPR (General Data Protection Regulation) is very important. A compromised database system can lead to a loss of revenue, regulatory fines, and a negative impact on the reputation of your business.

Tracking compliance and maintaining database security requires significant admin resources. SQL Server 2019 has tools such as Data Discovery and Classification, and SQL Vulnerability Assessment tools that allow DBAs to identify compliance issues and tag and classify specific datasets to ensure compliance.

SQL Server 2019 offers many security features that address these challenges, such as TDE (Transparent Data Encryption), Always Encrypted, Auditing, Dynamic Data Masking and Row-Level Security.

Combined with further enhancements to certificate management in SQL Server 2019, support for TLS 1.2, and confidential computing...

SQL Data Discovery and Classification

The Data Discovery and Classification feature enables you to identify, classify, and label data held across your SQL Server estate. The sheer volume of data now held within databases makes this a challenging process, coupled with the fact that regulatory mandates such as GDPR, SOX, and PCI demand that businesses protect sensitive data. So you can see how this feature will help. Before you can develop a security strategy for your SQL Server databases, it makes logical sense to know what data you hold, and from this you can then classify and label the more sensitive data and implement the relevant security controls, therefore minimizing potential sensitive data leaks.

Key components for this feature include two metadata attributes, labels and information types. Labels are used to define the sensitivity of data. Information types are used to provide additional granularity into the types of data stored in a column. As you can see in Figure 2.1...

SQL Vulnerability Assessment

While we're thinking about a sound security strategy for SQL Server, it is important to address current security issues that exist within your database estate. Where should you start? What technical work is required to address the issues found? SQL Vulnerability Assessment is the tool for this task. It will allow you to improve your internal processes and harden your security across a dynamic and ever-changing database environment.

Note

Vulnerability Assessment is supported for SQL Server 2012 and later and requires SSMS 17.4+.

This feature carries out a scan against the database(s) using a pre-built knowledge base of rules that will flag security concerns such as elevated accounts and security misconfigurations. To start this assessment, you will need to right-click on the database and click on Vulnerability Assessment (as shown in the following screenshot) and start a scan:

Figure 2.6: Accessing the vulnerabilities...

Always Encrypted

SQL Server 2019 includes Always Encrypted, an encryption technology first introduced in SQL Server 2016 which allows clients to encrypt sensitive data inside client applications with the key benefit of never revealing the encryption keys to the database engine.

When using Always Encrypted, data never appears in plain text when querying it, and it is not even exposed in plain text in the memory of the SQL Server process. Only client applications that have access to the relevant keys can see the data. This feature is ideal for protecting data from even highly privileged users such as database administrators and system administrators. It does not prevent them from administrating the servers, but it does prevent them from viewing highly sensitive data such as bank account details.

Algorithm types

Always Encrypted uses the AEAD_AES_256_CBC_HMAC_SHA_256 algorithm. There are two variations: deterministic and randomized. The deterministic encryption always generates...

Confidential computing with secure enclaves

As mentioned earlier, the main two challenges with Always Encrypted are the reduced query functionality and making it necessary to move data out of database for cryptographic operations, such as initial encryption or key rotation. To address this, Microsoft leverages cutting-edge secure enclave technology to allow rich computations and cryptographic operations to take place inside the database engine.

The enclave is a special, isolated, and protected region of memory. There is no way to view the data or the code inside the enclave from the outside, even with a debugger. You can think of it as a black box. This means that an enclave is the perfect place to process highly sensitive information and decrypt it, if necessary. While there are several enclave technologies available, SQL Server 2019 supports Virtualization Based Security (VBS) secure memory enclaves in Windows Server 2019. The Windows hypervisor ensures the isolation of VBS enclaves...

Dynamic Data Masking

SQL Server 2019 provides dynamic data masking (DDM), which limits sensitive data exposure by masking it to non-privileged users. This is not really a form of encryption at disk but nevertheless is useful in certain scenarios, such as if you want to hide sections of a credit card number from support staff personnel. Traditionally, this logic would have been implemented at the application layer; however, this is not the case now because it is controlled within SQL Server.

Note

A masking rule cannot be applied on a column that is Always Encrypted.  

Types

You can choose from four different masks where selection usually depends on your data types:

  • DEFAULT: Full masking according to the data types of the designated fields
  • EMAIL: A masking method that exposes the first letter of an email address, such as aXXX@XXXX.com
  • RANDOM: A random masking function for use on any numeric type to mask the original value with a random value within...

Row-Level Security

Row-level security (RLS) gives database administrators and developers the ability to allow fine-grained access control over rows within tables. Rows can be filtered based on the execution context of a query. Central to this feature is the concept of a security policy where, via an inline table-valued function, you would write your filtering logic to control access with complete transparency to the application. Real-world examples include situations in which you would like to prevent unauthorized access to certain rows for specific logins, for example, only giving access to a super-user to view all rows within a sensitive table and allowing other users to see rows that only the super-user should see. The following example shows how simple it is to implement RLS via T-SQL. At a high level, access to a specific table called rls.All_Patient is defined by a column called GroupAccessLevel, which is mapped to two SQL logins called GlobalManager and General. As you can imagine...

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Key benefits

  • Gain insights into what’s new in SQL Server 2019
  • Understand use cases and customer scenarios that can be implemented with SQL Server 2019
  • Discover new cross-platform tools that simplify management and analysis

Description

Microsoft SQL Server comes equipped with industry-leading features and the best online transaction processing capabilities. If you are looking to work with data processing and management, getting up to speed with Microsoft Server 2019 is key. Introducing SQL Server 2019 takes you through the latest features in SQL Server 2019 and their importance. You will learn to unlock faster querying speeds and understand how to leverage the new and improved security features to build robust data management solutions. Further chapters will assist you with integrating, managing, and analyzing all data, including relational, NoSQL, and unstructured big data using SQL Server 2019. Dedicated sections in the book will also demonstrate how you can use SQL Server 2019 to leverage data processing platforms, such as Apache Hadoop and Spark, and containerization technologies like Docker and Kubernetes to control your data and efficiently monitor it. By the end of this book, you'll be well versed with all the features of Microsoft SQL Server 2019 and understand how to use them confidently to build robust data management solutions.

Who is this book for?

This book is for database administrators, architects, big data engineers, or anyone who has experience with SQL Server and wants to explore and implement the new features in SQL Server 2019. Basic working knowledge of SQL Server and relational database management system (RDBMS) is required.

What you will learn

  • Build a custom container image with a Dockerfile
  • Deploy and run the SQL Server 2019 container image
  • Understand how to use SQL server on Linux
  • Migrate existing paginated reports to Power BI Report Server
  • Learn to query Hadoop Distributed File System (HDFS) data using Azure Data Studio
  • Understand the benefits of In-Memory OLTP
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Length: 488 pages
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ISBN-13 : 9781838826215
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Table of Contents

14 Chapters
1. Optimizing for performance, scalability and real‑time insights Chevron down icon Chevron up icon
2. Enterprise Security Chevron down icon Chevron up icon
3. High Availability and Disaster Recovery Chevron down icon Chevron up icon
4. Hybrid Features – SQL Server and Microsoft Azure Chevron down icon Chevron up icon
5. SQL Server 2019 on Linux Chevron down icon Chevron up icon
6. SQL Server 2019 in Containers and Kubernetes Chevron down icon Chevron up icon
7. Data Virtualization Chevron down icon Chevron up icon
8. Machine Learning Services Extensibility Framework Chevron down icon Chevron up icon
9. SQL Server 2019 Big Data Clusters Chevron down icon Chevron up icon
10. Enhancing the Developer Experience Chevron down icon Chevron up icon
11. Data Warehousing Chevron down icon Chevron up icon
12. Analysis Services Chevron down icon Chevron up icon
13. Power BI Report Server Chevron down icon Chevron up icon
14. Modernization to the Azure Cloud Chevron down icon Chevron up icon
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