CEVAP:

In transaction processing systems, information operations are processed in two ways:

1. Real-time processing: When operations to be recorded occurred, they are entered into system and recorded instantly. Databases are also immediately updated. Current inquires may be done in such processing.  
2. Batch processing: In this kind of processing system, operations are batched in specific periods (daily, weekly, monthly) and then processed. Since the database cannot be updated at any time in the batch processing method, accurate information might not be obtained in a certain query.