What is the difference between Git's "object database" and the "index" (staging area) at a low level?
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Incorrect.
The correct answer is A) The object database (.git/objects) is a content-addressable store of all blobs, trees, commits, and tags ever created, forming permanent history, while the index (.git/index) is a single file representing the next commit's planned tree
Correct Answer
The object database (.git/objects) is a content-addressable store of all blobs, trees, commits, and tags ever created, forming permanent history, while the index (.git/index) is a single file representing the next commit's planned tree
Understanding this distinction clarifies operations like "git add" (updates the index to match a working directory file's blob) and "git commit" (creates a new tree/commit from the index's current state) — files in the object database are immutable once written.