Define Your Requirements (The “Why” and “What
efore looking at any specific database, clearly articulate your needs. This is the most crucial step.
Business Objectives & Use Cases:
What problem are you trying to solve or what newEmail marketing consistently delivers a high return on investment (ROI). Email leads are valuable because you “own” your audience (unlike social media, where algorithms last database control reach), allowing for direct, personalized communication, relationship building, and effective nurturing. capabilities do you want to enable? (e.g., e-commerce, analytics, real-time tracking, content management, financial transactions).

What are the core business processes this database will support?
Are you primarily doing Online Transaction Processing (OLTP) or Online Analytical Processing (OLAP)? (Often, you’ll need both, or a hybrid approach).
Data Characteristics:
Data Model: Is your data structured getting started with consumer email leads (tables, fixed schema), semi-structured (JSON, XML), or unstructured (documents, media files)? (e.g., many-to-many relationships, joins).
Data Volume: How much data do you expect to store initially? What’s the projected growth over 1, 3, 5 years? (e.g., gigabytes, terabytes, petabytes).
Data Velocity: How fast is data being generated and consumed? (e.g., millions of events per second, daily batch updates). ACID Compliance: Is strong Atomicity, Consistency, Isolation, and Durability (ACID) absolutely critical for your transactions (e.g., financial systems)?
Data Variety: How many different types of data will fax marketing you be storing?
Performance & Scalability:
Read/Write Patterns: Will your application be read-heavy, write-heavy, or balanced?
Latency Requirements: What are your acceptable response times for queries and transactions? (e.g., milliseconds for real-time, seconds for reports).
Throughput Requirements: How many transactions or queries per second do you need to handle?
Concurrency: How many simultaneous users or connections will the database need to support?
Scalability Model: Do you need vertical scaling (more powerful hardware) or horizontal scaling (adding more servers)? How easily can the database scale to accommodate future growth?
Data Consistency & Integrity:
ACID Compliance: Is strong Atomicity, Consistency, Isolation, and Durability (ACID) absolutely critical for your transactions (e.g., financial systems)?
Eventual Consistency: Can your application tolerate some delay in data consistency for higher availability and scalability (common in distributed NoSQL systems)?
2. Technical & Operational Considerations
Once you have a clear picture of your requirements, evaluate databases based on these practical aspects.ACID Compliance: Is strong Atomicity, Consistency, Isolation, and Durability (ACID) absolutely critical for your transactions (e.g., financial systems)?