SQL, or Structured Query Language, is a standardized programming language used for managing and manipulating relational databases. It allows users to perform various operations such as querying data, updating records, creating and modifying database structures, and controlling access to the data.

About Sql
SQL was developed in the early 1970s by IBM researchers Donald D. Chamberlin and Raymond F. Boyce. It was created to provide a standardized way to interact with relational databases, which were based on the relational model proposed by Edgar F. Codd. The language became widely adopted due to its simplicity and effectiveness in managing large amounts of structured data.
SQL's strengths include its powerful querying capabilities, standardized syntax, and widespread adoption. Weaknesses involve scalability issues with very large datasets and complexity in handling unstructured data. Competitors include NoSQL databases like MongoDB, Cassandra, and Redis, which offer better scalability and flexibility for certain types of data.
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How to hire a Sql expert
A SQL expert must have strong skills in writing and optimizing complex SQL queries, understanding relational database design and normalization, proficiency in using indexing for performance improvement, knowledge of transaction management and concurrency control, familiarity with stored procedures and triggers, and experience with specific SQL-based database systems like MySQL, PostgreSQL, or Microsoft SQL Server.

Carlos S.
Skills
Carlos is a Product Manager with four years of experience. Before transitioning to product management, Carlos worked as a Backend Developer and Software Development professor.

Josué Q.
Skills
With more than 15 years of experience in data systems and structures, expertise lies in enabling organizations to make strategic, evidence-based decisions. Proficiency encompasses the comprehensive design and implementation of Business Intelligence (BI) processes, including objectives definition, data collection, transformation, storage and modeling, report and dashboard development, distribution and access, training and empowerment, monitoring and maintenance, and documentation. The professional background includes diverse sectors such as retail, manufacturing, digital banking, services, solar energy, importation, big data, and healthcare, which enhances capability to provide precise and effective data solutions.

Matheus D.
Skills
Full-stack developer with over five years of professional experience specializing in web development and infrastructure. Demonstrates expertise in managing high-traffic applications, with strong proficiency in functional programming, Object-Oriented Programming (OOP), and various development and deployment practices. Commands a deep knowledge of programming languages including PHP, Golang, and JavaScript. Areas of interest and specialization include application scalability, infrastructure optimization, and best practices in development, particularly in Test-Driven Development (TDD) and Behavior-Driven Development (BDD).

Glaucia C.
Skills
A seasoned professional with expertise in system support, holding the AWS Certified Cloud Practitioner (CLF-C02) credential. Proficient in cloud platforms such as AWS and Azure, and skilled in infrastructure as code using Terraform. Possesses a strong command of programming languages including Python and Java, and is well-versed in Linux environments. Experienced in managing databases such as MySQL, MongoDB, and SqlServer.

Lourenço L.
Skills
Economist with extensive expertise in Python and core data science libraries, including pandas, numpy, sklearn, and keras. Possesses strong proficiency in SQL and Power BI, and has experience in developing tools and automating processes using Python. Proficient in constructing and implementing various machine learning models, such as K-means clustering, decision trees, linear regression, and logistic regression. Well-versed in leveraging cloud services, including AWS, Azure, and GCP. Recognized for exceptional logical reasoning skills, a self-taught approach to learning, sociability, a results-driven mindset, and a high capacity for effective delivery.

Mauro K.
Skills
An extensive background in market research has fostered a consistent expertise in data analysis, evident throughout the professional journey. This expertise encompasses sales analysis, campaign performance evaluation, and customer retention strategies within e-commerce and franchising sectors. Engagement in projects spanning goal deployment, e-commerce launches, and process optimization has further refined these skills. Proficiency in creating dashboards and reports through Excel and Power BI facilitates the visualization and monitoring of key performance indicators.

Tarcio S.
Skills
An Information Systems student with expertise in full-stack web development, possessing proficiency in Node.js and React.js frameworks. Demonstrates advanced capabilities in JavaScript, HTML, and CSS, alongside solid experience in database management utilizing MySQL and MongoDB. Experienced in creating REST APIs and integrating external APIs, reflecting a strong foundation in both front-end and back-end technologies.

Julyse H.
Skills
Expertise in leadership, management, and team development, with a strong proficiency in creating web systems and microservices using .NET. Skilled in process and requirements analysis, as well as system integration. Contributed to the definition of architecture and the development of high-availability services designed to support significant access volumes.
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