Difference between OLAP and OLTP
OLAP vs OLTP
Main Differences
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OLAP
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OLTP
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Definition
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OLAP is known as online analytic processing.
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OLTP is known as online transaction processing.
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purpose
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The most important purpose is to plan, problem-solving, decision support.
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The most important purpose is to run business tasks.
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Queries
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Queries of OLAP are often complex, therefore it is not much easier
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OLTP queries are Relatively standardized and simple, therefore, it is easier.
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Focus
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Importantly the main focus is on Reporting and retrieval of information.
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Importantly the main focus is on updating data.
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Inserts and updates
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It refreshes the data because of Periodic long-running batch jobs
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It does not need to refresh again and again because of Short and fast inserts
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USE
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It is mostly used for Querying processing
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It is mostly used for transaction processing
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Database design
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It is based on Star and snowflake schema
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It is ER-based and application-oriented
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Users
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This is used by managers, executives and data scientists
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OLTP is used by Clerk, DBA and database professionals
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Data task
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Main tasks are Reporting and data analysis
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The operational task and business task
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Processing speed
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Complex queries may take many hours because it depends on the amount of data, batch data and
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This is very fast because it does not depend on the data amount.
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Data source
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It mostly used Historical data
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It uses mostly Operational data
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Database Size
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Database size is 100 Gb to Tb
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100 Mb to Gb size of data
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Access
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Only read
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Read/write
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More Differences
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Space requirements
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It requires more space for historical data.
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It requires less space to stored operational data.
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Volume of transactions
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Low volume of transactions
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The high volume of transactions
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Maintenance
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It maintains information about the complete organization
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It maintains data particular to a location or branch.
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Data
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It stores historical and old data.
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It stores current and latest data.
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Time period
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It basically deals with year to year transactions or long.
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It deals with day to day and short transactions.
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Orientation
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OLAP is market-oriented
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OLTP is customer oriented
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Storage form
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It stores the data in dimensional
Form
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It stores the data in relational form
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Very useful for a short read, but I recommend for a more detailed vision as well for a an insight how both OLAP and OLTP can be related, to check out this article https://www.imaginarycloud.com/blog/oltp-vs-olap/ .
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