Target Audience

The primary goal of DP-300 exam is for you to deal with administering relational databases. Therefore, it would be mandatory to check whether DP-300 is the best-in-class option for your career ambition. Commonly, candidates could become database administrators and database management authorities after successfully accomplishing this evaluation. So, in short, the targeted audience will be those aspirants who want to be an Azure SQL Database Administrator and the ones preparing for this test.

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Query Performance Optimization

• Evaluation of Performance improvements
  • Determining the ideal Dynamic Management Views (DMVs) to collect information relating query performance
  • Using DMVs to identify performance issues
  • Implementation and identification of index changes for queries
  • Assessing the importance of hints in query performance
  • Defining query construct modifications
• Reviewing index design and database table
  • Identifying issues on data quality and data duplication
  • Database tables
  • Assessing index design
  • Validating data types
  • Recommending table and index storage including file groups
  • Evaluation of table partitioning strategy
  • Compression for indexes and tables
• Reviewing query plans
  • Determining the ideal execution plan
  • Identification of problem sections in execution plans
  • Extraction of query plans from the Query Store

Reference: https://learn.microsoft.com/en-us/credentials/certifications/azure-database-administrator-associate/?practice-assessment-type=certification

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Official Training by Microsoft for DP-300

Besides going through the good books listed above, you may also refer to a few Microsoft resources like free learning paths. Among them, you’ll encounter:

• Monitor and optimize operational resources in SQL Server

  Various types of troubleshooting tips for the DP-300 aspirants are given in this Microsoft document with 5 sections. The identification of performance degradation causes and optimizing the performance of server resources is taught well in this path. Also, you will learn server configuration by making use of Azure SQL Intelligent Insights.

• Implement a secure environment for a database service

  Encryption, advanced security, threat mitigation, validation for Azure SQL databases, and authorization of access requests being created are a few topics you can learn through this 3-part Microsoft resource.

• Optimize query performance in the SQL Server

  The investigation of individual queries and dynamic management objects for their performance, indexing behavior, and database deployment in order to notice respective impact and figure out the tricks for improvement can be learned in this 3-module learning path.

• Automate tasks in SQL Server

  This course consists of 3 detailed modules covering subjects like how to handle automation repetitive tasks, script maintenance tasks, and administer multi-instance jobs automatically in Azure SQL.

• Plan & implement a high availability & DR environment

  This learning path with 3 modules enables you to improve the availability of the resources during disaster recovery (DR) practices. Configuration, management, testing, and data availability-checking through Azure & SQL server tools are taught too.

• Azure SQL fundamentals

  This course comprises 6 portions and helps you master Azure SQL, managed instances in Azure SQL, and Azure SQL DB. If you have some prior experience in SQL server handling and resource deployment in Azure, this resource will be of great help to you.

• Plan & implement data platform resources

  If you have some hands-on experience in SQL and SQL database management alongside the knowledge of on-premises virtualization, encryption, network configuration & Azure portal, you are eligible for learning from this resource and utilizing the gained knowledge to pass DP-300. In particular, it teaches you how to deploy data platform resources for SQL server & open-source DBs while using Azure. Template-creation, migration, requirement estimation for resources, and upgradation are a few more things it covers as well with the help of three comprehensive parts.