3.9. Data Loads
Databases frequently have multiple information providers as shown in Figure 3-9.
Figure 3-9. Database Information Providers.
OLTP providers usually perform single-row inserts or updates—these transactions are usually just a few rows. Data can also be loaded in from other systems. These are batch data loads and occur when there is less OLTP activity.
Data loads typically fall into two categories. One type is a schema initialization load. This process brings data into the database for the first time and coincides with the application development. The load may be from a legacy system that is being converted to Oracle. These loads ...