| Abstract | .... 2 | |
| 1 | Introduction | .... 3 |
| 2 | Overview of the Relational Knowledge Base Model | .... 5 |
| 3 | Queries to the Relational Knowledge Base | .... 9 |
| 3.1 | Relational Calculus for the Relational Knowledge Base | .... 10 |
| 3.2 | Relational Operations between Terms | .... 11 |
| 3.3 | Query Expressions in the From of Calculus | .... 14 |
| 4 | Manipulation Language for the Relational Knowledge Base | .... 15 |
| 5 | Discussion | .... 18 |
| 6 | Conclusion | .... 19 |
| Acknowledgment | .... 19 | |
| References | .... 20 | |
| End | .... 21 |
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