Query Performance Optimization

• 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
• 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 query plans
  • Determining the ideal execution plan
  • Identification of problem sections in execution plans
  • Extraction of query plans from the Query Store

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How to Register For Exam DP-300: Administering Relational Databases on Microsoft Azure?

Exam Register Link: https://examregistration.microsoft.com/?locale=en-us&examcode=DP-300&examname=Exam%20DP-300:%20Administering%20Relational%20Databases%20on%20Microsoft%20Azure&returnToLearningUrl=https%3A%2F%2Fdocs.microsoft.com%2Flearn%2Fcertifications%2Fexams%2Fdp-300

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Languages: English, Chinese (Simplified), Japanese, Korean

Retirement date: none

This exam measures your ability to accomplish the following technical tasks: plan and implement data platform resources; implement a secure environment; monitor and optimize operational resources; optimize query performance; perform automation of tasks; plan and implement a High Availability and Disaster Recovery (HADR) environment; and perform administration by using T-SQL.

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Microsoft DP-300 evaluates one’s capacity to perform the technical tasks identified in the exam objectives. It is important to review these topics before sitting for the test and develop competence in each domain. The details of the subject area that you need to study for this certification exam are enumerated below:

Plan and Apply Data Platform Resources: 15-20%

• Use Manual Techniques to Deploy Resources: The candidates must demonstrate competence in deploying different database offerings on specific platforms, configuring tailored deployment models, and using updates and patches for IaaS and hybrid deployment.
• Configure Identified Resources for Performance & Scale: This domain will measure the individuals’ skills in the configuration of Azure SQL database, managed instances, and Azure VMs for performance and scale. It also evaluates their capacity to measure the resource prerequisites, set-up SQL Data Sync, and assess database partitioning methods.
• Implement the Upgrade/Migration Strategy for Transferring to Azure: The applicants should develop competence in implementing the online/offline migration and online/offline upgrade strategies.
• Assess the Strategy for Transferring to Azure: This topic covers competence in assessing online/offline migration strategies, prerequisites for migrations, online/offline upgrade strategies, and prerequisites for the upgrade.
• Suggest a Suitable Database Offering according to Specified Prerequisites: This section requires that the examinees have the skills in measuring the prerequisites for deploying as well as measuring the functional impacts/benefits of likely database offerings. They should also have the expertise in evaluating various security areas of probable database offerings as well as HA/DR of likely database offerings.

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

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