Loading Using RDBMS-Specific Strategies

1. RDBMS-Specific Data Transfer Mechanisms:
• Certain RDBMSs have built-in mechanisms to transfer data across different servers or technologies. These mechanisms can be leveraged for more efficient data loading strategies.
2. Examples of RDBMS-Specific Strategies:
• Oracle: Uses database links to connect and transfer data between different Oracle databases.
• Microsoft SQL Server: Uses linked servers to allow communication and data transfer between different SQL Server instances or other databases.
• IBM DB2 400: Uses DRDA (Distributed Relational Database Architecture) file transfer to move data between DB2 instances.
3. Other Specific Mechanisms for Loading Data:
• Some RDBMSs have specific features for loading data directly into tables, such as Oracle’s External Table feature, which allows access to data files as if they were tables.
4. Using RDBMS-Specific Strategies:
• Knowledge Modules (KMs) are used to implement these strategies. The KMs:
• Create appropriate objects (e.g., views, database links, linked servers, etc.).
• Implement the necessary commands to use these specific features for efficient data loading.
5. Steps in Loading Using RDBMS-Specific Strategies:
• Step 1: Set Up Connection:
• Establish the connection between the source and target systems using the specific mechanism of the RDBMS (e.g., database links for Oracle, linked servers for SQL Server, etc.).
• Step 2: Create Necessary Objects:
• The Knowledge Module (KM) will create the necessary objects such as views, database links, or linked servers to facilitate data transfer between systems.
• Step 3: Execute Transfer Commands:
• The KM will then execute the appropriate commands to transfer data from the source system to the target system using the established connection mechanism.
• Step 4: Data Load and Transformation:
• Once the data is transferred, it can be loaded into the staging area or directly into the target database.
• Any transformations can take place after the data is transferred.
• Step 5: Clean Up:
• After the data transfer and integration process is completed, the created objects (views, database links, etc.) are cleaned up to avoid unnecessary resource consumption.