In India, rural incomes are generally lower than the urban incomes, which of the following reasons account for this? A large number of farmers are illiterate and know little about scientific agriculture Prices of primary products are lower than those of manufactured products Investment in agriculture has been low when compared to investment in industry
Options: to create a table, defining its columns, integrity constrains, and storage allocation, to add a column/integrity constraint to a table, to redefine a column, to change a table's storage characteristics
When mapping a supertype/subtype relationship which of the following is true?
Options: The supertype primary key is assigned to each subtype., The subtype primary key is assigned to each supertype., There is no link between the supertype/subtype entities., There is no primary key/foreign key relationship between a supertype/subtype.
. Relationship can be establish between two tables by
Options: a. Drag Primary key of a table into Foreign key of another table
b. Drag Foreign key of a table into Primary key of another table
c. Drag any key of a table into any key of another table
d. All of the above
Data link layer retransmits the damaged frames in most networks. If the probability of a frame's being damaged is p, what is the mean number of transmissions required to send a frame if acknowledgements are never lost.
Options: P I (K + 1), KIK (1 + F), 1/ (1 - F), K I (K - P)