module DBI
module DBI::DBD
module DBI::DBD::OCI8
module DBI::DBD::OCI8::BindType
module DBI::DBD::OCI8::Util
module OCI8::BindType
module OCI8::BindType::Util
module OCI8::Metadata
module OCI8::Object
module OCI8::Util
class DBI::DBD::OCI8::BindType::DBIDate
class DBI::DBD::OCI8::BindType::DBIStatementHandle
class DBI::DBD::OCI8::BindType::DBITimestamp
class DBI::DBD::OCI8::Database
class DBI::DBD::OCI8::Database::DummyQuoter
class DBI::DBD::OCI8::Driver
class DBI::DBD::OCI8::NoTypeConversion
class DBI::DBD::OCI8::Statement
class Numeric
class OCI8
class OCI8::BindArgumentHelper
class OCI8::BindType::Base
class OCI8::BindType::BasicNumberType
class OCI8::BindType::BigDecimal
class OCI8::BindType::CLOB
class OCI8::BindType::Date
class OCI8::BindType::DateTime
class OCI8::BindType::IntervalDS
class OCI8::BindType::IntervalYM
class OCI8::BindType::LocalDateTime
class OCI8::BindType::LocalTime
class OCI8::BindType::NamedType
class OCI8::BindType::Number
class OCI8::BindType::Object
class OCI8::BindType::RAW
class OCI8::BindType::Rational
class OCI8::BindType::String
class OCI8::BindType::Time
class OCI8::BindType::UTCDateTime
class OCI8::BindType::UTCTime
class OCI8::ConnectionPool
class OCI8::Cursor
class OCI8::InCondBindHelper
class OCI8::Metadata::ArgBase
class OCI8::Metadata::Argument
class OCI8::Metadata::Base
class OCI8::Metadata::Collection
class OCI8::Metadata::Column
class OCI8::Metadata::Database
class OCI8::Metadata::Function
class OCI8::Metadata::List
class OCI8::Metadata::Package
class OCI8::Metadata::Procedure
class OCI8::Metadata::Schema
class OCI8::Metadata::Sequence
class OCI8::Metadata::Subprogram
class OCI8::Metadata::Synonym
class OCI8::Metadata::Table
class OCI8::Metadata::Type
class OCI8::Metadata::TypeArgument
class OCI8::Metadata::TypeAttr
class OCI8::Metadata::TypeMethod
class OCI8::Metadata::TypeResult
class OCI8::Metadata::Unknown
class OCI8::Metadata::View
class OCI8::NamedCollection
class OCI8::NamedType
class OCI8::Object::Base
class OCI8::OracleVersion
class OCI8::TDO
class OCI8::TDO::Attr
class OCIError
class OCIHandle
class OraDate
class OraNumber
class String
ruby-oci8
2.2.14
# nullable?
def nullable? __boolean(OCI_ATTR_IS_NULL) end