By Donald Bales
JDBC is the foremost Java know-how for relational database entry. Oracle is arguably the main normal relational database platform in the area. during this publication, Donald Bales brings those applied sciences jointly, and indicates you the way to leverage the whole energy of Oracle's implementation of JDBC.
You commence via studying the all-important mysteries of creating database connections. this is often essentially the most complicated components for programmers new to JDBC, and Donald covers it good with certain details and examples exhibiting easy methods to make database connections from purposes, applets, Servlets, or even from Java courses operating in the database itself.
Next comes thorough assurance of JDBC's relational SQL beneficial properties. you will the right way to factor SQL statements and get effects again from the database, the best way to learn and write facts from huge, streaming info varieties reminiscent of BLOBs, CLOBs, and BFILEs, and you are going to find out how to interface with Oracle's different integrated programming language, PL/SQL.
If you take good thing about the Oracle's really new skill to create item tables and column items in response to user-defined datatypes, you will be happy with Don's thorough therapy of this topic. Don indicates you ways to exploit JPublisher and JDBC to paintings seamlessly with Oracle database gadgets from inside Java courses. you are going to additionally how you can entry nested tables and arrays utilizing JDBC.
Donald concludes the ebook with a dialogue of transaction administration, locking, concurrency, and performance--topics that each expert JDBC programmer needs to be regular with. should you write Java courses to run opposed to an Oracle database, this ebook is a must-have.
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Extra info for Java programming with Oracle JDBC
You can end your code base URL with an asterisk (*) and thus apply the policy to any applet file in the specified directory. • You can end your code base URL with a dash (-) and thus apply the policy to any applet file in the specified directory or in any directory underneath the specified directory. If instead you set up a policy for a particular certificate alias, then the policy will hold for any file signed with that certificate. Finally, if you use both methods, then not only does the file need to be signed using the specified certificate, but it also has to reside at the specified code base.
It does not hold an object reference), your program will throw a NullPointerException. By utilizing a try block, you can capture this error, communicate the problem to the program user in a meaningful way, and exit your program gracefully. If you don't capture the exception, the exception will cause a stack trace to print, and the program will abort. 2 Try block nesting behavior Just as PL/SQL blocks can be nested, so can try blocks. This means that if your nested try block does not handle a particular exception, that exception will propagate to the next level.
Firewalls allow only desirable connections between networks. This means that under normal circumstances, a firewall will prevent your applet from connecting to a database located on the other side of the firewall. The solution to this problem is to use a firewall that supports Net8. Additionally, you need to use yet another special form of the Net8 connection string. 1 Configuring a Firewall for Net8 Firewalls use a set of rules to determine which clients can connect through them. These rules are based on a client's hostname, DNS alias, or IP address.