DSA by domain
Data & Databases
Moving, storing and querying data at scale — sorting, hashing, heaps and intervals do the heavy lifting.
What the roles here have in common
One topic is core for every one of the 3 roles in Data & Databases. Whatever job you end up interviewing for inside this domain, this is the part that was never optional:
- Sorting
11 more topics are core for some of these roles but not all of them. Which ones apply is exactly what changes when you pick your role below:
- Arrays
- BST
- Binary Search
- Dynamic Programming
- Graph
- Heap
- Intervals
- Math
- Matrix
- Trie
- Two Pointers
Roles in this domain
Same 370 problems, re-sequenced per role. Pick the exact one you are interviewing for — the roles with a full guide are linked; the rest work inside the app today.
- data engineeringData engineering loops are heavy on arrays, sorting and math — the ETL-shaped problems: 7 core topics, 117 of our 370 problems. Graphs and DP appear far less often than in a general SDE loop, though graph work does show up for pipeline/DAG questions.
- Data AnalystIn the app
- Database EngineerIn the app