Engineering, 13.03.2020 03:32 ashleyd9243
Suppose we have a JDBC Connection object c to a database, and this database has a relation
R(name, address, phone)
Columns name and address are of string type, while phone is an integer.
The following objects are also declared:
Statement s = null;
String q = "SELECT address, phone FROM R" + "WHERE name = 'Bill Gates'".
ResultSet r null;
There are many methods that could be applied to the given variables. When a method is applied to r, assume that it holds the result of query q. Then, identify a correct use of a method from the list below.
a) String x = r. getInt (1);
b) r = c. executeQuery (g) ;
c) int p = r. getInt (2);
d) r = s. executeQuery ( );
Answers: 1
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Ahelical coil spring has a mean diameter of 50 mm, a wire diameter of 5.5 mm and is wound with a pitch of 10 mm. the spring steel has an ultimate strength of 1250 mpa. find the force needed to compress the spring solid and the wire stress in this condition. state whether the spring will return to its initial length.
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Engineering, 04.07.2019 19:20, zoebtharpe
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Suppose we have a JDBC Connection object c to a database, and this database has a relation
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