oracle data integrator books

Oracle development environment, we can use the dbms_lob package for processing! Dbms_lob package is powerful and simple to use. It can be used to read internal lob objects or process bfile objects. However, there is a difference between the two. When processing internal lob objects blob, clob), read and write operations can be performed, but when processing external lob object bfile, read operations can only be performed, write operations can be proc

Oracle performance topics are very broad and there are many books on the market that specifically describe Oracle tuning. The pursuit of performance is endless, need long-term unremitting efforts, but to avoid the problem of performance is not difficult, can be said to be simple. From a simple and practical point of view, this paper gives several effective ways t

oracle| Security | Data with the popularization of computers and the development of the network, the database is no longer just the topic that the programmer is proprietary. and Oracle database is by virtue of its outstanding performance, easy to operate and flexible features, in the database market has occupied a place. But also with the continuous progress of n

In practical applications, tree structure data is widely used, such as the directory structure of books and the classification of organization departments !!!!! Such as the Directory of a book Name Code P_code Directory Mulu 0 Chapter 1 Zh_1 Mulu Section 1 Ji_1_1 Zh_1 First Hu_1_1_1 Ji_1_1 Second Hu_1_1_2 Ji_1_

Hibernate is an open-source object relationship ing framework that encapsulates JDBC objects in a lightweight manner, allowing Java programmers to use object programming as they wish. Hibernate is an open-source object relationship ing framework that encapsulates JDBC objects in a lightweight manner, allowing Java programmers to use object programming as they wish. Hibernate is an open-source object relationship ing framework. It encapsulates JDBC objects in a lightweight manner, so that Ja

Hibernate is an open-source object relationship ing framework that encapsulates JDBC objects in a lightweight manner, so that Java programmers can use the object programming thinking to manipulate the database as they wish. Hibernate can be used in any situation where JDBC is used. It can be used in Java client programs or Servlet/JSP Web applications. The most revolutionary is that, hibernate can replace CMP in the J2EE architecture of application EJB to fulfill the task of

queries. Especially when designing a large table to query records that meet the conditions, the WHERE condition statement can be used to limit the query response speed. For example, in the library management system, when someone wants to query the "CPA" counseling book, although the "CPA" is not in the category or name of the book ", it is also feasible to query all records first, and then check whether there is any relevant book information one by one. However, in this case, the system respons