SQL

Imagine a business that is growing day by day. The number of clients is increasing, the volume of data is getting larger, and the requirements for the speed and accuracy of information processing are increasing. And at this moment, the question arises in front of you: how to effectively manage all this information without wasting a second on data processing, but on the contrary - winning in efficiency? The answer is simple: competent database management.

I offer you my help in solving exactly such tasks. With more than five years of experience working with various database management systems (DBMS), I am ready to help you not only organize your data, but make it a real asset for your business. Let's figure out how my experience can be useful and how it will benefit your project.

Why are databases the heart of your business?

Every modern business works with large amounts of data. And it's not just about standard customer databases or financial statements. This includes data on customer behavior, sales analytics, and internal processes of the company. When the information is organized and managed correctly, it starts working for you. But this requires more than just SQL knowledge.

This is where I come into play - a database engineer with experience in creating not only structures for storing data, but also solutions for their automatic processing and analysis. My experience includes both on-premises DBMS and cloud solutions, which allows me to adapt the architecture and work with databases to specific business needs.

Why is my experience important?

I don't just have technical knowledge. My experience allows me to understand business needs at a deep level. Creating reports, planning, and creating tests to verify the correctness of SQL queries is not just working with code, it is the ability to link technical solutions to real business needs.

What can I offer?

  • Creation and modernization of the data architecture. Your data requires a reliable and modern architecture. I will help you create and develop solutions that will scale with your business.
  • Performance monitoring and database optimization. An inefficient database can be a drag on business. My task is to identify performance bottlenecks and configure databases so that they work as quickly and efficiently as possible.
  • Data migration and migration to cloud solutions. Do you want to transfer data from one DBMS to another, or are you planning to switch to cloud solutions? I have successfully conducted such migrations with minimal business risks.
  • Master Data Management. Creating a central data source that will be used for all business processes of the company. This ensures the integrity of the data and simplifies its management.
  • Integration of solutions with visualization tools. I have worked with tools such as QlikView and BusinessObjects, which allows you to quickly set up analytics and visualize data for making management decisions.

I can work with both on-premises and cloud data models, and use automation to deploy and monitor databases. My solutions will not only meet the current needs of the company, but also remain relevant in the long term.

How will this help your business?

You will get a reliable partner who understands how important it is to manage data quickly and efficiently. I will help you set up the database architecture, set up automated processes, migrate and ensure high performance. This will save you time and resources, and allow you to focus on business development rather than solving technical problems.

Let's work together! Your data is the key to success. And I will help you make sure that this key opens all the doors for the growth and prosperity of your business.

Database services

  • Support, design and creation of databases: MS SQL, MySQL, Access, etc. Providing security, consistency and availability of data for end-users.
  • Research and analysis, modification and testing, deployment of new features and further maintenance of existing databases and their applications created in c#, php, VBA, etc.
  • Creating specifications for software products, as well as writing and implementing effective code.
  • Development and implementation of data quality control (QA/QC) procedures.
  • Migration of existing solutions to more modern or suitable technologies, which may include Azure hosted databases or other cloud front-end platforms.
  • Creation of new and support of existing input forms, automation of processes and query optimization.
  • Development and support of data import (several types of sources, various types of files and various data formats), export and subsequent updating processes.
  • Creation and support of SQL stored procedures.
  • Cleaning and bringing to a state of consistency of historical data in databases.
  • Working with cloud-based DB, providing access to them, including from mobile devices for collecting field data.
  • Optimization of reporting processes.

Acceleration of SQL queries

Sometimes an SQL query is executed for a long time, unnecessarily filling the server's RAM and spinning disks into unnecessary dances.

How to increase the efficiency of requests and reduce their resource intensity?

  • Building the right data structure: the structure should correspond to the business objectives of the application, from the point of view of the relational paradigm, be close to 3NF, linking tables by surrogate keys, etc..
  • Semantic query optimization:
    • disclosure of views (abandoning view and returning to tables, if that makes sense),
    • conversion of subqueries into joins,
    • descent of predicates (selection should be performed before joining, if possible),
    • etc...
  • Correct indexing of fields in tables.
  • Clustering of related tables.
  • Partitioning/partitioning/fragmentation/segmentation of tables and indexes.
  • Segmentation of tables.
  • Clustering of database servers (when writing is done on the master, and reading is done on replicas).
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