Siksha Sarovar

Siksha Sarovar (sikshasarovar.com) is a free educational web application that helps students in India learn programming and prepare for academic and competitive exams. The platform offers structured coding courses (C, C++, Python, Java, HTML, CSS, PHP, Power BI, AI, Machine Learning, Data Science), complete university curriculum notes for BCA/MCA students with previous year question papers, Class 10 and Class 12 CBSE/HBSE school notes, and dedicated preparation material for SSC, UPSC, Banking, Railway and other government exams. Browsing the site is completely free and requires no account. Users may optionally sign in with Google solely to save their learning progress, quiz scores and personal preferences across devices.

Privacy Policy | Terms of Service | Contact Siksha Sarovar | About Siksha Sarovar

v4.0.9 · PWA
Siksha Sarovar logo
Siksha Sarovar
Your Learning Universe

Siksha Sarovar is a free e-learning platform for coding courses, BCA university notes and competitive exam preparation. Optional Google sign-in saves your learning progress across devices.

Initializing knowledge base…
Compiling modules 0%

Database vs. Data Warehouse

Lesson 3 of 32 in the free Data Warehousing and Data Mining(Elective-II) notes on Siksha Sarovar, written by Rohit Jangra.

---

3. Database vs. Data Warehouse

It is crucial to distinguish between an operational Database (OLTP) and a Data Warehouse (OLAP).

FeatureDatabase (OLTP)Data Warehouse (OLAP)
Full FormOnline Transaction ProcessingOnline Analytical Processing
Primary PurposeTo run day-to-day business operations.To support decision-making, reporting, and data analysis.
Data FocusCurrent data (Real-time).Historical and Archival data.
Data VolatilityVolatile (Frequent Insert, Update, Delete).Non-Volatile (Massive Insert during load, No Update/Delete).
Schema DesignHighly Normalized (3NF) to reduce redundancy.De-normalized (Star/Snowflake) to optimize query performance.
Query ComplexitySimple, standard queries (CRUD operations).Complex queries involving aggregations, sorting, and grouping.
UsersClerks, DBAs, Front-end applications.Executives, Managers, Analysts.
Data VolumeTypically Gigabytes.Terabytes to Petabytes.
Response TimeMilliseconds (Instant).Seconds, Minutes, or Hours (acceptable for reports).
IndexingLimited indexing to speed up write operations.Heavy indexing and pre-calculation to speed up read operations.