Research Article
Assessment of Urban Water Supply System Based on Query Optimization Strategy
Table 3
SDD-1 algorithm search strategy.
| Query strategy | Semijoin program | Overhead |
| E.ENO⟶station 2 | G∝ENOE | 120 | J.JNO⟶station 2 | G∝JNOJ | 200 | GENO⟶station 1 | E∝ENOG | 120 | E⟶station 3 | | 1200 | G station 3 | | 360 | Total overhead | | 2000 |
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