/*
 * JBoss, Home of Professional Open Source.
 * See the COPYRIGHT.txt file distributed with this work for information
 * regarding copyright ownership.  Some portions may be licensed
 * to Red Hat, Inc. under one or more contributor license agreements.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301 USA.
 */

package org.teiid.jdbc;

/* <p> This class contains constants indicating names of the columns in the
 *  result sets returned by methods on DatabaseMetaData. Each inner class represents
 *  a particular method and the class attributes give the names of the columns on
 *  methods ResultSet.</p>
 */

interface JDBCColumnNames {

    /**
     * This class contains constants representing column names on ResultSet
     * returned by getCatalogs method on DatabaseMetaData. These constant values
     * are be used for the column names used in constructing the ResultSet obj.
     */
    interface CATALOGS {
        //  name of the column containing catalog or Virtual database name.
        static final String TABLE_CAT = "TABLE_CAT"; //$NON-NLS-1$
    }

    /**
     * This class contains constants representing column names on ResultSet
     * returned by getColumns method on DatabaseMetaData. These constant values
     * are be used to hardcode the column names used in constructin the ResultSet obj.
     */
    interface COLUMNS {

        //  name of the column containing catalog or Virtual database name.
        static final String TABLE_CAT = "TABLE_CAT"; //$NON-NLS-1$

        //  name of the column containing schema or Virtual database version.
        static final String TABLE_SCHEM = "TABLE_SCHEM"; //$NON-NLS-1$

        //  name of the column containing table or group name.
        static final String TABLE_NAME = "TABLE_NAME"; //$NON-NLS-1$

        //  name of the column containing column or element name.
        static final String COLUMN_NAME = "COLUMN_NAME"; //$NON-NLS-1$

        /** name of column that contains SQL type from java.sql.Types for column's data type. */
        static final String DATA_TYPE = "DATA_TYPE"; //$NON-NLS-1$

        /** name of column that contains local type name used by the data source. */
        static final String TYPE_NAME = "TYPE_NAME"; //$NON-NLS-1$

        //  name of the column containing column size.
        static final String COLUMN_SIZE = "COLUMN_SIZE"; //$NON-NLS-1$

        /** name of column that is not used will contain nulls */
        static final String BUFFER_LENGTH = "BUFFER_LENGTH"; //$NON-NLS-1$

        //  name of the column containing number of digits to right of decimal
        static final String DECIMAL_DIGITS = "DECIMAL_DIGITS"; //$NON-NLS-1$

        //  name of the column containing column's Radix.
        static final String NUM_PREC_RADIX = "NUM_PREC_RADIX"; //$NON-NLS-1$

        /** name of column that has an String value indicating nullablity */
        static final String NULLABLE = "NULLABLE"; //$NON-NLS-1$

        /** name of column containing explanatory notes. */
        static final String REMARKS = "REMARKS"; //$NON-NLS-1$

        /** name of column which contails default value for the column. */
        static final String COLUMN_DEF = "COLUMN_DEF"; //$NON-NLS-1$

        /** name of column that not used will contain nulls */
        static final String SQL_DATA_TYPE = "SQL_DATA_TYPE"; //$NON-NLS-1$

        /** name of column that not used will contain nulls */
        static final String SQL_DATETIME_SUB = "SQL_DATETIME_SUB"; //$NON-NLS-1$

        /** name of column that stores the max number of bytes in the column */
        static final String CHAR_OCTET_LENGTH = "CHAR_OCTET_LENGTH"; //$NON-NLS-1$

        /** name of column that stores the index of a column in the table */
        static final String ORDINAL_POSITION = "ORDINAL_POSITION"; //$NON-NLS-1$

        /** name of column that has an String value indicating nullablity */
        static final String IS_NULLABLE = "IS_NULLABLE"; //$NON-NLS-1$

        /** name of column that is the scope of a reference attribute (null if DATA_TYPE isn't REF)*/ 
        static final String SCOPE_CATLOG = "SCOPE_CATLOG"; //$NON-NLS-1$
        
        /** name of column that is the scope of a reference attribute (null if the DATA_TYPE isn't REF) */ 
        static final String SCOPE_SCHEMA = "SCOPE_SCHEMA"; //$NON-NLS-1$
        
        /** name of column that is the scope of a reference attribure (null if the DATA_TYPE isn't REF) */
        static final String SCOPE_TABLE = "SCOPE_TABLE"; //$NON-NLS-1$
        
        /** 
         * name of column that is source type of a distinct type or user-generated Ref type, SQL type
         * from java.sql.Types (null if DATA_TYPE isn't DISTINCT or user-generated REF)
         */ 
        static final String SOURCE_DATA_TYPE = "SOURCE_DATA_TYPE"; //$NON-NLS-1$
        
        /** name of column that has an String value indicating format */
        static final String FORMAT = "FORMAT"; //$NON-NLS-1$

        /** name of column that has an String value indicating minimum range */
        static final String MIN_RANGE = "MIN_RANGE"; //$NON-NLS-1$

        /** name of column that has an String value indicating maximum range */
        static final String MAX_RANGE = "MAX_RANGE"; //$NON-NLS-1$
     }

    /**
     * This class contains constants representing column names on ResultSet
     * returned by getColumnPrivileges and getTablePrivileges methods on
     * DatabaseMetaData. These constant values are be used to hardcode the column
     * names used in constructin the ResultSet obj.
     */
    interface PRIVILEGES {

        //  name of the column containing catalog or Virtual database name.
        static final String TABLE_CAT = "TABLE_CAT"; //$NON-NLS-1$

        //  name of the column containing schema or Virtual database version.
        static final String TABLE_SCHEM = "TABLE_SCHEM"; //$NON-NLS-1$

        //  name of the column containing table or group name.
        static final String TABLE_NAME = "TABLE_NAME"; //$NON-NLS-1$

        //  name of the column containing column or element name.
        static final String COLUMN_NAME = "COLUMN_NAME"; //$NON-NLS-1$

        //  name of the column containing Grantor name
        static final String GRANTOR = "GRANTOR"; //$NON-NLS-1$

        //  name of the column containing Grantee name
        static final String GRANTEE = "GRANTEE"; //$NON-NLS-1$

        //  name of the column containing privilege name
        static final String PRIVILEGE = "PRIVILEGE"; //$NON-NLS-1$

        //  name of the column containing privilage grantable info
        static final String IS_GRANTABLE = "IS_GRANTABLE"; //$NON-NLS-1$
    }

    /**
     * This class contains constants representing column names on ResultSet
     * returned by getCrossReference, getExportedKeys, and getImportedKeys methods
     * on DatabaseMetaData. These constant values are be used to hardcode the
     * column names used in constructin the ResultSet obj.
     */
    interface REFERENCE_KEYS {

        //  name of the column containing catalog or Virtual database name for primary key's table.
        static final String PKTABLE_CAT = "PKTABLE_CAT"; //$NON-NLS-1$

        //  name of the column containing schema or Virtual database version for primary key's table.
        static final String PKTABLE_SCHEM = "PKTABLE_SCHEM"; //$NON-NLS-1$

        //  name of the column containing table or group name for primary key's table.
        static final String PKTABLE_NAME = "PKTABLE_NAME"; //$NON-NLS-1$

        // name of the column containing column or element name of the primary key.
        static final String PKCOLUMN_NAME = "PKCOLUMN_NAME"; //$NON-NLS-1$

        // name of the column containing catalog or Virtual database name for foreign key's table.
        static final String FKTABLE_CAT = "FKTABLE_CAT"; //$NON-NLS-1$

        // name of the column containing schema or Virtual database version for foreign key's table.
        static final String FKTABLE_SCHEM = "FKTABLE_SCHEM"; //$NON-NLS-1$

        // name of the column containing table or group name for foreign key's table.
        static final String FKTABLE_NAME = "FKTABLE_NAME"; //$NON-NLS-1$

        // name of the column containing column or element name of the foreign key.
        static final String FKCOLUMN_NAME = "FKCOLUMN_NAME"; //$NON-NLS-1$

        // name of the column containing sequence number within the foreign key
        static final String KEY_SEQ = "KEY_SEQ"; //$NON-NLS-1$

        // name of the column containing effect on foreign key when PK is updated.
        static final String UPDATE_RULE = "UPDATE_RULE"; //$NON-NLS-1$

        // name of the column containing effect on foreign key when PK is deleted.
        static final String DELETE_RULE = "DELETE_RULE"; //$NON-NLS-1$

        // name of the column containing name of the foreign key.
        static final String FK_NAME = "FK_NAME"; //$NON-NLS-1$

        // name of the column containing name of the primary key.
        static final String PK_NAME = "PK_NAME"; //$NON-NLS-1$

        // name of the column containing deferability of foreign key constraStrings.
        static final String DEFERRABILITY = "DEFERRABILITY"; //$NON-NLS-1$
        static final String FKPOSITION = "FKPOSITION"; //$NON-NLS-1$
    }


    /**
     * This class contains constants representing column names on ResultSet
     * returned by getPrimaryKeys method on DatabaseMetaData. These constant values
     * are be used to hardcode the column names used in constructin the ResultSet obj.
     */
    interface PRIMARY_KEYS {

        // name of the column containing catalog or Virtual database name.
        static final String TABLE_CAT = "TABLE_CAT"; //$NON-NLS-1$

        // name of the column containing schema or Virtual database version.
        static final String TABLE_SCHEM = "TABLE_SCHEM"; //$NON-NLS-1$

        // name of the column containing table or group name.
        static final String TABLE_NAME = "TABLE_NAME"; //$NON-NLS-1$

        // name of the column containing column or element name.
        static final String COLUMN_NAME = "COLUMN_NAME"; //$NON-NLS-1$

        // name of the column containing sequence number within the primary key
        static final String KEY_SEQ = "KEY_SEQ"; //$NON-NLS-1$

        // name of the column containing name of the primary key.
        static final String PK_NAME = "PK_NAME"; //$NON-NLS-1$
        static final String POSITION = "POSITION"; //$NON-NLS-1$
    }


    /**
     * This class contains constants representing column names on ResultSet
     * returned by getProcedureColumns method on DatabaseMetaData. These constant
     * values are be used to hardcode the column names used in constructin the
     * ResultSet obj.
     */
    interface PROCEDURE_COLUMNS {

        // name of the column containing procedure catalog or Virtual database name.
        static final String PROCEDURE_CAT = "PROCEDURE_CAT"; //$NON-NLS-1$

        // name of the column containing schema or Virtual database version.
        static final String PROCEDURE_SCHEM = "PROCEDURE_SCHEM"; //$NON-NLS-1$

        // name of the column containing table or group name.
        static final String PROCEDURE_NAME = "PROCEDURE_NAME"; //$NON-NLS-1$

        // name of the column containing column or element name.
        static final String COLUMN_NAME = "COLUMN_NAME"; //$NON-NLS-1$

        // name of the column containing column or element type.
        static final String COLUMN_TYPE = "COLUMN_TYPE"; //$NON-NLS-1$

        /** name of column that contains SQL type from java.sql.Types for column's data type. */
        static final String DATA_TYPE = "DATA_TYPE"; //$NON-NLS-1$

        /** name of column that contains local type name used by the data source. */
        static final String TYPE_NAME = "TYPE_NAME"; //$NON-NLS-1$

        // name of the column containing number of digits to right of decimal
        static final String PRECISION = "PRECISION"; //$NON-NLS-1$

        /** name of column that that contains length of data in bytes */
        static final String LENGTH = "LENGTH"; //$NON-NLS-1$

        // constant indiacting column's Radix.
        static final String SCALE = "SCALE";         //$NON-NLS-1$

        // constant indiacting column's Radix.
        static final String RADIX = "RADIX"; //$NON-NLS-1$

        /** name of column that has an String value indicating nullablity */
        static final String NULLABLE = "NULLABLE"; //$NON-NLS-1$

        /** name of column containing explanatory notes. */
        static final String REMARKS = "REMARKS"; //$NON-NLS-1$
        static final String POSITION = "POSITION"; //$NON-NLS-1$
    }


    /**
     * This class contains constants representing column names on ResultSet
     * returned by getProcedures method on DatabaseMetaData. These constant values
     * are be used to hardcode the column names used in constructin the ResultSet obj.
     */
    interface PROCEDURES {

        // name of the column containing procedure catalog or Virtual database name.
        static final String PROCEDURE_CAT = "PROCEDURE_CAT"; //$NON-NLS-1$

        // name of the column containing schema or Virtual database version.
        static final String PROCEDURE_SCHEM = "PROCEDURE_SCHEM"; //$NON-NLS-1$

        // name of the column containing table or group name.
        static final String PROCEDURE_NAME = "PROCEDURE_NAME"; //$NON-NLS-1$

        // name of the column containing name of the column which is reserved
        //static final String RESERVED = "RESERVED";

        /** name of column containing explanatory notes. */
        static final String REMARKS = "REMARKS"; //$NON-NLS-1$

        /** name of column indicating kind of the procedure. */
        static final String PROCEDURE_TYPE = "PROCEDURE_TYPE"; //$NON-NLS-1$
        
        static final String RESERVED_1 = "RESERVED_1"; //$NON-NLS-1$
        static final String RESERVED_2 = "RESERVED_2"; //$NON-NLS-1$
        static final String RESERVED_3 = "RESERVED_3";   //$NON-NLS-1$
    }


    /**
     * This class contains constants representing column names on ResultSet
     * returned by getSchemas method on DatabaseMetaData. These constant values
     * are be used to hardcode the column names used in constructin the ResultSet obj.
     */
    interface SCHEMAS {

        // name of the column containing procedure catalog or Virtual database name.
        static final String TABLE_SCHEM = "TABLE_SCHEM"; //$NON-NLS-1$

        // name of the column containing schema or Virtual database version.
        static final String TABLE_CATALOG = "TABLE_CATALOG"; //$NON-NLS-1$

    }

    /**
     * This class contains constants representing column names on ResultSet
     * returned by getTables and getTableTypes methods on DatabaseMetaData. These
     * constant values are be used to hardcode the column names used in construction
     * the ResultSet obj.
     */
    interface TABLES {

        // name of the column containing catalog or Virtual database name.
        static final String TABLE_CAT = "TABLE_CAT"; //$NON-NLS-1$

        // name of the column containing schema or Virtual database version.
        static final String TABLE_SCHEM = "TABLE_SCHEM"; //$NON-NLS-1$

        // name of the column containing table or group name.
        static final String TABLE_NAME = "TABLE_NAME"; //$NON-NLS-1$

        // name of the column containing table or group type.
        static final String TABLE_TYPE = "TABLE_TYPE"; //$NON-NLS-1$

        /** name of column containing explanatory notes. */
        static final String REMARKS = "REMARKS"; //$NON-NLS-1$
        static final String TYPE_CAT = "TYPE_CAT"; //$NON-NLS-1$
        static final String TYPE_SCHEM = "TYPE_SCHEM"; //$NON-NLS-1$
        static final String TYPE_NAME = "TYPE_NAME"; //$NON-NLS-1$
        static final String SELF_REFERENCING_COL_NAME = "SELF_REFERENCING_COL_NAME"; //$NON-NLS-1$
        static final String REF_GENERATION = "REF_GENERATION"; //$NON-NLS-1$
        static final String ISPHYSICAL = "ISPHYSICAL"; //$NON-NLS-1$
    
    }

    /**
     * This class contains constants representing column names on ResultSet
     * returned by getTables and getTableTypes methods on DatabaseMetaData. These
     * constant values are be used to hardcode the column names used in construction
     * the ResultSet obj.
     */
    interface TABLE_TYPES {

        // name of the column containing table or group type.
        static final String TABLE_TYPE = "TABLE_TYPE"; //$NON-NLS-1$
    }

    /**
     * This class contains constants representing column names on ResultSet
     * returned by getTypeInfo method on DatabaseMetaData. These constant values
     * are be used to hardcode the column names used in constructin the ResultSet obj.
     */
    interface TYPE_INFO {

        /** name of column that contains local type name used by the data source. */
        static final String TYPE_NAME = "TYPE_NAME"; //$NON-NLS-1$

        /** name of column that contains SQL type from java.sql.Types for column's data type. */
        static final String DATA_TYPE = "DATA_TYPE"; //$NON-NLS-1$

        // name of the column containing number of digits to right of decimal
        static final String PRECISION = "PRECISION"; //$NON-NLS-1$

        // name of the column containing prefix used to quote a literal
        static final String LITERAL_PREFIX = "LITERAL_PREFIX"; //$NON-NLS-1$

        // name of the column containing suffix used to quote a literal
        static final String LITERAL_SUFFIX = "LITERAL_SUFFIX"; //$NON-NLS-1$

        // name of the column containing params used in creating the type
        static final String CREATE_PARAMS = "CREATE_PARAMS"; //$NON-NLS-1$

        /** name of column that has an String value indicating nullablity */
        static final String NULLABLE = "NULLABLE"; //$NON-NLS-1$

        /** name of column that has an String value indicating case sensitivity */
        static final String CASE_SENSITIVE = "CASE_SENSITIVE"; //$NON-NLS-1$

        /** name of column that has an String value indicating searchability */
        static final String SEARCHABLE = "SEARCHABLE"; //$NON-NLS-1$

        /** name of column that has an String value indicating searchability */
        static final String UNSIGNED_ATTRIBUTE = "UNSIGNED_ATTRIBUTE"; //$NON-NLS-1$

        /** name of column that contains info if the column is a currency value */
        static final String FIXED_PREC_SCALE = "FIXED_PREC_SCALE"; //$NON-NLS-1$

        /** name of column that contains info whether the column is autoincrementable */
        static final String AUTOINCREMENT = "AUTO_INCREMENT"; //$NON-NLS-1$

        /** name of column that localised version of type name */
        static final String LOCAL_TYPE_NAME = "LOCAL_TYPE_NAME"; //$NON-NLS-1$

        /** name of column that gives the min scale supported */
        static final String MINIMUM_SCALE = "MINIMUM_SCALE"; //$NON-NLS-1$

        /** name of column that gives the max scale supported */
        static final String MAXIMUM_SCALE = "MAXIMUM_SCALE"; //$NON-NLS-1$

        /** name of column that not used will contain nulls */
        static final String SQL_DATA_TYPE = "SQL_DATA_TYPE"; //$NON-NLS-1$

        /** name of column that not used will contain nulls */
        static final String SQL_DATETIME_SUB = "SQL_DATETIME_SUB"; //$NON-NLS-1$

        // constant indiacting column's Radix.
        static final String NUM_PREC_RADIX = "NUM_PREC_RADIX"; //$NON-NLS-1$
    }


    /**
     * This class contains constants representing column names on ResultSet
     * returned by getUDTS method on DatabaseMetaData. These constant values
     * are be used to hardcode the column names used in constructin the ResultSet obj.
     */
    interface UDTS {

        // name of the column containing table or Groups name in which UDTS are present.
        static final String TABLE_NAME = "UDTS"; //$NON-NLS-1$

        // name of the column containing catalog or Virtual database name.
        static final String TYPE_CAT = "TYPE_CAT"; //$NON-NLS-1$

        // name of the column containing schema or Virtual database version.
        static final String TYPE_SCHEM = "TYPE_SCHEM"; //$NON-NLS-1$

        // name of the column containing name of type name column.
        static final String TYPE_NAME = "TYPE_NAME"; //$NON-NLS-1$

        // name of the column containing class name column.
        static final String CLASS_NAME = "CLASS_NAME"; //$NON-NLS-1$

        // name of the column containing name of sql datatype code column
        static final String DATA_TYPE = "DATA_TYPE"; //$NON-NLS-1$

        // name of the column containing comments column
        static final String REMARKS = "REMARKS"; //$NON-NLS-1$
        static final String BASE_TYPE = "BASE_TYPE"; //$NON-NLS-1$
    }

    /**
     * This class contains constants representing column names on ResultSet
     * returned by getIndexInfo method on DatabaseMetaData. These constant values
     * are be used to hardcode the column names used in constructin the ResultSet obj.
     */
    interface INDEX_INFO {

        // name of the column containing tables catalog name on which the index is present
        static final String TABLE_CAT = "TABLE_CAT"; //$NON-NLS-1$

        // name of the column containing tables schema name on which the index is present
        static final String TABLE_SCHEM = "TABLE_SCHEM"; //$NON-NLS-1$

        // name of the column containing table or group name.
        static final String TABLE_NAME = "TABLE_NAME"; //$NON-NLS-1$

        // name of the column containing name of column showing if an index in non-unique
        static final String NON_UNIQUE = "NON_UNIQUE"; //$NON-NLS-1$

        // name of the column containing name of column containing index_qualifier string
        static final String INDEX_QUALIFIER = "INDEX_QUALIFIER"; //$NON-NLS-1$

        // name of the column containing name of column containing index names
        static final String INDEX_NAME = "INDEX_NAME"; //$NON-NLS-1$

        // name of the column containing name of column containing index types
        static final String TYPE = "TYPE"; //$NON-NLS-1$

        // name of the column containing name of the column containing column position.
        static final String ORDINAL_POSITION = "ORDINAL_POSITION"; //$NON-NLS-1$

        // name of the column containing name of the column containing column names.
        static final String COLUMN_NAME = "COLUMN_NAME"; //$NON-NLS-1$

        // name of the column containing name of column containing info if the index is asc or desc.
        static final String ASC_OR_DESC = "ASC_OR_DESC"; //$NON-NLS-1$

        // name of the column containing name of the column containing number of unique values in index.
        static final String CARDINALITY = "CARDINALITY"; //$NON-NLS-1$

        // name of the column containing name of the column giving number od pages used for the current index.
        static final String PAGES = "PAGES"; //$NON-NLS-1$

        // name of the column containing name of the column giving filter condition.
        static final String FILTER_CONDITION = "FILTER_CONDITION"; //$NON-NLS-1$
    }

    /**
     * This class contains constants representing column names on ResultSet
     * returned by getBestRowIdentifier method on DatabaseMetaData. These constant values
     * are be used to hardcode the column names used in constructin the ResultSet obj.
     */
    interface BEST_ROW {

        // name of the column containing SCOPE of the identifier
        static final String SCOPE = "SCOPE"; //$NON-NLS-1$

        // name of the column containing column name
        static final String COLUMN_NAME = "COLUMN_NAME"; //$NON-NLS-1$

        // name of the column containing data type code
        static final String DATA_TYPE = "DATA_TYPE"; //$NON-NLS-1$

        // name of the column containing data type name
        static final String TYPE_NAME = "TYPE_NAME"; //$NON-NLS-1$

        // name of the column containing size of the column
        static final String COLUMN_SIZE = "COLUMN_SIZE"; //$NON-NLS-1$

        // name of the column containing buffer length
        static final String BUFFER_LENGTH = "BUFFER_LENGTH"; //$NON-NLS-1$

        // name of the column containing decimal digits/ scale
        static final String DECIMAL_DIGITS = "DECIMAL_DIGITS"; //$NON-NLS-1$

        // name of the column containing name of the column containing column position.
        static final String ORDINAL_POSITION = "ORDINAL_POSITION"; //$NON-NLS-1$

        // name of the column containing pseudo column
        static final String PSEUDO_COLUMN = "PSEUDO_COLUMN"; //$NON-NLS-1$
    }
    
    /**
     * This class contains constants representing column names on ResultSet
     * returned by getSuperTables method on DatabaseMetaData. These constant values
     * are be used to hardcode the column names used in constructin the ResultSet obj.
     */
    interface SUPER_TABLES {
        // name of the column containing catalog or Virtual database name.
        static final String TABLE_CAT = "TABLE_CAT"; //$NON-NLS-1$
        // name of the column containing schema or Virtual database version.
        static final String TABLE_SCHEM = "TABLE_SCHEM"; //$NON-NLS-1$
        // name of the column containing table or Groups name .
        static final String TABLE_NAME = "TABLE_NAME"; //$NON-NLS-1$
        // name of the column containing super table.
        static final String SUPERTABLE_NAME = "SUPERTABLE_NAME"; //$NON-NLS-1$
    }
    
    /**
     * This class contains constants representing column names on ResultSet
     * returned by getSuperTypes method on DatabaseMetaData. These constant values
     * are be used to hardcode the column names used in constructin the ResultSet obj.
     */
    
    interface SUPER_TYPES {

        // name of the column containing catalog or Virtual database name.
        static final String TYPE_CAT = "TYPE_CAT"; //$NON-NLS-1$
        // name of the column containing schema or Virtual database version.
        static final String TYPE_SCHEM = "TYPE_SCHEM"; //$NON-NLS-1$
        // name of the column containing name of type name column.
        static final String TYPE_NAME = "TYPE_NAME"; //$NON-NLS-1$
        //  name of the column containing super catalog or Virtual database name.
        static final String SUPERTYPE_CAT = "SUPERTYPE_CAT"; //$NON-NLS-1$
        // name of the column containing super schema or Virtual database version.
        static final String SUPERTYPE_SCHEM = "SUPERTYPE_SCHEM"; //$NON-NLS-1$
        // name of the column containing name of super type name column.
        static final String SUPERTYPE_NAME = "SUPERTYPE_NAME"; //$NON-NLS-1$

    }

}
