[Solved] Which of the following best describes how a B-tree index organizes data internally? — Ans: Data is stored in a balanced tree structure with sorted keys | PostgreSQL

PostgreSQL - Indexing Strategies

Which of the following best describes how a B-tree index organizes data internally?

AData is stored in a balanced tree structure with sorted keys

BData is stored as a hash table with key-value pairs

CData is stored in a linked list sorted by insertion order

DData is stored in a bitmap for quick bitwise operations

Step-by-Step Solution

Solution:

Step 1: Recall B-tree structure
B-tree indexes store data in a balanced tree with sorted keys for efficient searching.
Step 2: Compare with other structures
Hash tables, linked lists, and bitmaps are different structures not used by B-tree indexes.
Final Answer:
Data is stored in a balanced tree structure with sorted keys -> Option A
Quick Check:
B-tree structure = balanced sorted tree [OK]

Quick Trick: B-tree means balanced tree with sorted keys for fast search [OK]

Common Mistakes:

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Which of the following best describes how a B-tree index organizes data internally?