Read Online or Download Oracle 8i Dev Guide Fundamental PDF
Best databases books
It doesn't matter what DBMS you're using—Oracle, DB2, SQL Server, MySQL, PostgreSQL—misunderstandings can consistently come up over the suitable meanings of phrases, misunderstandings which may have a significant impact at the good fortune of your database tasks. for instance, listed below are a few universal database phrases: characteristic, BCNF, consistency, denormalization, predicate, repeating team, sign up for dependency.
Additional info for Oracle 8i Dev Guide Fundamental
OraSQLStmt An OraSQLStmt Object represents a single SQL statement. Use the CreateSQL method to create the OraSQLStmt object from an OraDatabase. During create and refresh, OraSQLStmt objects automatically bind all relevant, enabled input parameters to the specified SQL statement, using the parameter names as placeholders in the SQL statement. This can improve the performance of SQL statement execution without re-parsing the SQL statement. SQLStmt The SQLStmt object (updateStmt) can be later used to execute the same query using a different value for the :SALARY placeholder.
SQLJ generates "profile" files with Oracle-specific customizing. Oracle8i supports SQLJ stored procedures, functions, and triggers which execute in a Java VM integrated with the data server. SQLJ is integrated with Oracle’s JDeveloper. Source-level debugging support is available in JDeveloper. println("Name is " + name + ", employee number = " + empno); Each host variable (or qualified name or complex Java host expression) is preceded by a colon (:). Other SQLJ statements are declarative (declares Java types) and allow you to declare an iterator (a construct related to a database cursor) for queries that retrieve many values: #sql iterator EmpIter (String EmpNam, int EmpNumb); SQLJ Design Goals The primary goal is to provide simple extensions to Java to allow rapid development and easy maintenance of Java applications that use embedded SQL to interact with databases.
3GL applications have full access to PL/SQL scalar and composite datatypes via host variables and implicit datatype conversion. PL/SQL’s tight integration with Oracle Developer lets you use one language to develop the client and server components of your application, which can be partitioned to achieve optimum performance and scalability. Also, Oracle’s Web Forms allows you to deploy your applications in a multi-tier Internet or intranet environment without modifying a single line of code. For more information see PL/SQL User’s Guide and Reference.