Database Reference
In-Depth Information
Get user class L(user)
Set i = 1
t
i
[TC] ≤ L(user)
No
Ye s
i = i + 1
t[PK] = t
i
[PK],
t[C
PK
] = t
i
[C
PK
]
Set j = 1
t
i
[A
j
] ∈ [A
i
]*
j = j + 1
Ye s
No
t[A
j
] = t
i
[A
i
],
t[C
j
] = t
i
[C
j
]
t[A
j
] = null,
t[C
j
] = L(user)
t[PK] = t´[PK] and
t[C
PK
] = t´[C
PK
] and
t[TC] = t´[TC]
Ye s
No
Tuple t' will be
replaced by t
Tuple t will be
inserted
End
Figure 3.13
Flow chart for uplevel operation in an MLR model.
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