Oracle 9i. Application Developers Guide - Large Objects by Higgins S., Kotsovolos S., Raphaely D.

By Higgins S., Kotsovolos S., Raphaely D.

Oracle 9i software Developer's Guide-Large gadgets (LOBs) includes details that describes the positive factors and performance of Oracled/ and Oracled/ company variation items. Oracle9i and Oracled/ firm variation have a similar uncomplicated good points. even though, a number of complex positive factors can be found merely with the firm variation, and a few of those are not obligatory. to exploit the Partitioning performance, decide on the Partitioning choice.

Show description

Read Online or Download Oracle 9i. Application Developers Guide - Large Objects (LOBs) PDF

Best databases books

Teradata RDBMS SQL/Data Dictionary Quick Reference

This ebook is a brief reference for the SQL dialect supported by means of the Teradata Relational Database administration approach. The publication can also be a brief connection with the supported information description words for the Teradata RDBMS and the knowledge Dictionary. The viewers for this quickly reference is all clients of Teradata SQL who desire fast, non-detailed information regarding the right way to constitution a SQL assertion.

Access Forms & Reports For Dummies

Create queries that make varieties and experiences invaluable enhance varieties to entry the information you wish and make studies that make feel! in the event you notion you needed to use a spreadsheet software to supply reviews and kinds, wager what! entry can end up great-looking varieties and experiences that truly express what is going on together with your facts -- should you know the way to invite it properly.

Additional resources for Oracle 9i. Application Developers Guide - Large Objects (LOBs)

Example text

In that case, you will need to perform character set conversions on the BFILE data before executing loadfromfile. Note that if the character set is varying-width, UTF-8 for example, we store the lob value in the fixed-width UCS2 format. loadfromfile(). However, we recommend that you use the sql*loader instead of loadfromfile to load data into a clob/nclob because the sql*loader will take care of all necessary character set conversions. Converting Between Client Character Set and UCS-2 There are APIs in cartridge service that can convert between client character set and UCS-2: ■ OCIUnicodeToCharSet() Basic LOB Components 2-5 LOB Value and Locators ■ OCICharSetToUnicode() LOB Value and Locators Inline storage of the LOB value Data stored in a LOB is termed the LOB’s value.

READ/WRITE through the rowset. ■ BFILEs. READ-ONLY through the rowset. 7). 5 are: xlviii ■ Temporary LOBs ■ Varying width CLOB and NCLOB support ■ Support for LOBs in partitioned tables ■ New API for LOBs (open/close/isopen, writeappend, getchunksize) ■ Support for LOBs in non-partitioned index-organized tables ■ Copying the value of a LONG to a LOB 1 Introduction to LOBs This chapter discusses the following topics: ■ Why Use LOBs? ■ Unstructured Data ■ LOB Datatype Helps Support Internet Applications ■ Why Not Use LONGs?

LOB (BLOB, CLOB, NCLOB, or BFILE) column types store values or references, called locators. Locators specify the location of large objects. LOB Columns Do Not Only Store Locators! In LOB columns, the LOB locator is stored in-line in the row. Depending on the user-specified SQL Data Definition Language (DDL) storage parameters, Oracle9i can store small LOBs, less than approximately 4K in-line in the table. Once the LOB grows bigger than approximately 4K Oracle9i moves the LOB out of the table into a different segment and possibly even into a different tablespace.

Download PDF sample

Rated 4.39 of 5 – based on 41 votes