Given the relational schema R = (U, V, W, X, Y, Z) and the set of functional dependencies :
{U → V,U → W, WX → Y,WX → Z,V → X}
Which of the following functional dependencies can be derived from the above set ?
{U → V,U → W, WX → Y,WX → Z,V → X}
Which of the following functional dependencies can be derived from the above set ?
- VW → YZ
- WX → YZ
- VW → U
- VW → Y
Top Questions on Database Concepts
- Consider the table below, where the (i,j)th element of the table is the distance between points xi and xj. Single linkage clustering is performed on data points, x1, x2, x3, x4, x5.
x1 x2 x3 x4 x5 x1 0 1 4 3 6 x2 1 0 3 5 3 x3 4 3 0 2 5 x4 3 5 2 0 1 x5 6 3 5 1 0 Which ONE of the following is the correct representation of the clusters produced ?
- GATE AR - 2024
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Questions Asked in GATE AR exam
A four-arm uncontrolled un-signaled urban intersection of both-way traffic is illustrated in the figure. Vehicles approaching the intersection from the directions A, B, C, and D can move to either left, right, or continue in straight direction. No U-turn is allowed. In the given situation, the maximum number of vehicular crossing conflict points for this intersection is _________ (answer in integer)
- GATE AR - 2025
- Traffic survey methods, Traffic flow Analysis
An individual chooses a transport mode for a particular trip based on three attributes i.e., cost of journey (X), In-vehicle travel time to reach destination (Y), and Out-of-vehicle time taken to access mode at respective stops (Z). The values for these attributes for three modes Rail, Bus and Para-transit are given in the table. If the general utility (U) equation is \( U = - 0.5 \times X - 0.3 \times Y - 0.4 \times Z \), using the Logit model, the estimated probability of choosing Bus is _________ (rounded off to two decimal places).
- GATE AR - 2025
- Transportation