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Big Data Technologies : Handling and processing large datasets using tools like Hadoop, Spark, and cloud platforms such as AWS and Google Cloud. Databases and SQL : Managing and querying relational databases using SQL, as well as working with NoSQL databases like MongoDB.
They create data pipelines, ETL processes, and databases to facilitate smooth data flow and storage. With expertise in programming languages like Python , Java , SQL, and knowledge of big data technologies like Hadoop and Spark, data engineers optimize pipelines for data scientists and analysts to access valuable insights efficiently.
Variety It encompasses the different types of data, including structured data (like databases), semi-structured data (like XML), and unstructured formats (such as text, images, and videos). It is built on the Hadoop Distributed File System (HDFS) and utilises MapReduce for data processing.
Statistics Understand descriptive statistics (mean, median, mode) and inferential statistics (hypothesistesting, confidence intervals). Additionally, learn about data storage options like Hadoop and NoSQL databases to handle large datasets. These concepts help you analyse and interpret data effectively.
Here are some of the most common backgrounds that prepare you well: Mathematics and Statistics These disciplines provide a rock-solid understanding of data analysis, probability theory, statistical modelling, and hypothesistesting – all essential tools for extracting meaning from data.
SQL is indispensable for database management and querying. This knowledge allows the design of experiments, hypothesistesting, and the derivation of conclusions from data. The curriculum covers data extraction, querying, and connecting to databases using SQL and NoSQL.
Concepts such as probability distributions, hypothesistesting , and Bayesian inference enable ML engineers to interpret results, quantify uncertainty, and improve model predictions. databases, CSV files). Data Collection: Sources and Types of Data Data comes in various forms , broadly categorised as structured and unstructured.
Key subjects often encompass: Statistics and Probability: Students learn statistical techniques for Data Analysis, including hypothesistesting and regression analysis, which are crucial for making data-driven decisions. They use databases and Data Visualisation tools to present data clearly and concisely.
So, a better database architecture would be to maintain multiple tables where one of the tables maintains the past 3 months history with session-level details, whereas other tables may contain weekly aggregated click, ATC, and order data. are captured and compared by formulating a hypothesistest to conclude with statistical significance.
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