From the course: Complete Guide to Data Lakes and Lakehouses
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File formats
From the course: Complete Guide to Data Lakes and Lakehouses
File formats
- [Instructor] In data lakes, file formats determine how data is stored, accessed, and analyzed. The choice of file format can affect everything from costs to query performance. Let me share with you some of the most common used file formats in data lakes and why choosing the right one matters. CSV is one of the simplest and most widely used file formats. I'm sure you have used it in one way or another. It is text-based, easy to understand, and supported by almost all data processing applications. However, because CSV files lack any type of data compression or schema enforcement, they are not optimized for large datasets or complex queries. JSON files are highly flexible and support a hierarchical, semi-structured data format, which is ideal for data in varying schemas. JSON is extensively used in web applications and for exchanging data between servers and web clients. While JSON is easy to read and flexible, it can be less efficient for storage and querying large datasets. Apache…
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