Accommodating unordered elements in xml schema

27-May-2020 09:19 by 4 Comments

Accommodating unordered elements in xml schema - kara scott dating brian townsend

By default, all SQL object types are created in the database schema of the user who registers the XML schema.

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Oracle XML DB then creates the appropriate SQL object types that enable object-relational storage of conforming XML documents.

In general: You can, however, modify the storage options, such as partitioning, of generated tables, and you can create indexes and constraints on generated tables.

You can also freely use any XML schema annotations provided by Oracle XML DB, including annotations that name generated constructs.

Type -------------------- ------ ------------------------------- SYS_XDBPD$ XDB. XDB$RAW_LIST_T Reference VARCHAR2(30 CHAR) Actions Actions Type1661_T Reject Rejection Type1660_T Requestor VARCHAR2(128 CHAR) User VARCHAR2(10 CHAR) Cost Center VARCHAR2(4 CHAR) Shipping Instructions Shipping Instructions Typ1659_T Special Instructions VARCHAR2(2048 CHAR) Line Items Line Items Type1666_T Notes VARCHAR2(4000 CHAR) DESCRIBE "Line Items Type1666_T" "Line Items Type1666_T" is NOT FINAL Name Null?

Type -------------------- ----- ------------------------------- SYS_XDBPD$ XDB. XDB$RAW_LIST_T Line Item Line Item1667_COLL DESCRIBE "Line Item1667_COLL" "Line Item1667_COLL" VARRAY(2147483647) OF Line Item Type1665_T "Line Item Type1665_T" is NOT FINAL Name Null?

In such cases, the XML instance is inserted into the default table.

Example 18-2 describes the default purchase-order table.

If you provide a value for attribute DESCRIBE "Purchase Order1669_TAB" Name Null?

Type --------------------------- ----- ----------------------- TABLE of SYS.

However, the following information in XML instance documents is not stored in these object attributes: In order to provide DOM fidelity for XML data stored object-relationally, Oracle XML DB uses a separate mechanism to keep track of this information: it is recorded as instance-level metadata.

This metadata is tracked at the type level using the system-defined binary object attribute .

Object-relational storage of XML documents is based on decomposing the document content into a set of SQL objects.

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