check_cols              Check Cols
check_count             Checks Count
check_data1             Check Data1
check_data2             Check Data2
check_data3             Check Data3
check_data_frame        Check Data Frame
check_date              Checks Date
check_flag              Checks Flag
check_int               Checks Int
check_join              Check Join
check_key               Check Key
check_number            Checks Number
check_rows              Check Rows
check_scalar            Check Scalar
check_string            Checks String
check_time              Checks Time
check_unique            Check Unique
check_values            Check Values
check_vector            Check Vector
max_integer             Maximum Integer Value
max_nrow                Maximum Number of Rows
min_integer             Minimum Integer Value
