Dear candidates you will find MCQ questions of Information Retrival Techniques here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
Explanation: transction() and readtransaction() are the two methods that take three arguments
Explanation: changeversion() method automatically verify version number and it also changes it like doing a schema update. when
Explanation: for read-only transaction, we create the object sqltransactionsync. if the first argument is null then we throw sqlexception which is error code 0.
Explanation: insertid attribute returns the row id of the row of the inserted sqlresultset object’s sql statement that is inserted into the database. if multiple rows are inserted then the id of the last row will be returned. if there is no row then invalid_access_err exception will be raised.
Explanation: rowsaffected attribute returns the
Explanation: when the quantity of the data returned from the database is very large then too_large_err is invoked. to minimize the data we can use sql “limit” i.e. modifier to reduce the size of the resultant set.
Explanation: the required argument to opendatabase is version number. so it is mandatory that you should know the version number before we try to open the database. if we do not pass this argument then an exception is thrown.
Explanation: for getting individual row results.rows.item(i) is used, i denotes the index of the row. it will return the object representation of the row. insertid returns row id but in case of multiple rows, it returns the id of the last row.
Explanation: the requirements specification may establish certain constraints that help to define the user of the system, but the interface design is often only incidental to the design model.
Explanation: prop.table() computes proportions from a contingency table.
Jump to