Top Ten Jdbc Best Practices For Coffee Programmer
Java JDBC Best practices
JDBC Best Practices are some coding practices which Java programmer should follow spell writing JDBC code. As discussed in how to connect to Oracle database from Java, JDBC API is used to connect together with interact amongst a Database management System. We own got touched some of the JDBC best practices inwards our in conclusion article 4 JDBC Performance tips, On which nosotros own got discussed uncomplicated tips to improve functioning of Java application amongst database. By using JDBC y'all tin execute DDL, DML together with Stored Procedures. JDBC Best practices is in all likelihood most pregnant laid of coding practices inwards Java because it significantly impact functioning of Java application. I own got seen substantial functioning hit past times but next mutual JDBC best practices similar running queries amongst motorcar commit trend disable. One of the query which nosotros used inwards our instance of JDBC Batch update was taking nigh xxx minute to destination amongst motorcar commit trend enabled but it exactly took nether 1 minute amongst motorcar commit trend disable together with using explicit commit. This JDBC tutorial is collection of such practices which assist y'all to write meliorate JDBC code together with inwards most cases lawsuit inwards improved performance.
10 JDBC Best pratices inwards Java
Here is my listing of overstep 10 JDBC best practices inwards Java which helps to avoid potential error, to larn meliorate functioning together with helps to write robust Java database connection code. JDBC Best Practice #1: Use PreparedStatement
This is past times far most pop JDBC practices suggested past times everyone who has worked inwards JDBC API inwards Java. Indeed PreparedStatement deserve that admiration because of useful services it provides similar prevention from SQL injection, Precompiled SQL queries together with operate of bind variables every bit discussed in why Use PreparedStatement inwards Java
JDBC Best Practice #2: Use ConnectionPool
ConnectionPool every bit JDBC best practise has already gained recognition together with it fifty-fifty conk touchstone at nowadays days. Several framework provides inwards built connection Pool facility like Database Connection Pool inwards Spring, DBCP together with if y'all are running inwards managed surroundings similar J2EE Application Server e.g. WAS or JBOSS, Server volition furnish Connection Pool facility. rational behind this JDBC best practices is that Creating JDBC connection accept relatively longer fourth dimension which tin growth overall response time, past times caching JDBC connection inwards puddle application tin at 1 time access database.
JDBC Best Practice #3: Disable motorcar commit mode
This is 1 of those JDBC best practices which provided substantial functioning hit inwards our JDBC batch update example. Its recommended to run SQL query amongst motorcar commit trend disable. Rational behind this JDBC best practise is that amongst motorcar commit trend disabled y'all tin group SQL Statement inwards 1 transaction spell inwards instance of motorcar commit trend every SQL contention runs inwards its ain transaction together with committed every bit shortly every bit it finishes. So ever run queries amongst motorcar commit trend disabled
JDBC Best Practice #4: Use JDBC Batch Update
This is some other JDBC best practise which is real popular. JDBC API provides addBatch() method to add together SQL queries into batch together with executeBatch() to post batch queries for execution. Rational behind this JDBC best practices is that, JDBC batch update potentially cut release of database roundtrip which lawsuit inwards pregnant functioning gain. So ever Use JDBC batch update for insertion together with update queries.
JDBC Best Practice #5: Access ResultSet using column advert to avoid invalidColumIndexError
JDBC API allows to access information returned past times SELECT query using ResultSet, which tin farther hold upward accessed using either column advert or column index. This JDBC best practise propose using column advert over column index inwards companionship to avoid InvalidColumnIndexException which comes if index of column is incorrect, most mutual of them is 0, since ResultSet column Index starts from 1, cipher is invalid. Also y'all don't need to alter your JDBC access code if companionship of column changed inwards SELECT SQL query, which is a major maintenance hit together with a robust agency to write JDBC code. Some Java programmer may debate that accessing column using index is faster than name, which is truthful but if y'all hold back inwards price of maintenance, robustness together with readability, I prefer accessing column using advert inwards ResultSet Iterator.
JDBC Best Practice #6: Use Bind variables instead of String concatenation
In JDBC Best Practice #1 nosotros own got propose to use PreparedStatement inwards Java because of meliorate performance. But functioning tin solely hold upward improved if y'all operate bind variables denoted past times ? or house holders. which allows database to run same query amongst dissimilar parameter. This JDBC best practices also lawsuit inwards meliorate functioning together with also furnish protection against SQL injection.
JDBC Best Practice #7: Always unopen Statement, PreparedStatement together with Connection.
Nothing novel on this JDBC Best practice. Its mutual Java coding practise to unopen whatsoever resources inwards finally block every bit shortly every bit y'all are done amongst that. JDBC Connection together with other JDBC classes are costly resources together with should hold upward closed inwards finally block to ensure unloosen of connection fifty-fifty inwards instance of whatsoever SQLException. From Java seven onwards y'all tin operate Automatic Resource Management (ARM) Block to unopen resources automatically.
JDBC Best Practice #8: Choose suitable JDBC driver for your application
There are iv typs of JDBC driver inwards Java together with it tin straight impact the functioning of DAO layer. ever operate latest JDBC Driver if available together with prefer type iv native JDBC Drivers.
JDBC Best Practice #9: Use touchstone SQL contention together with avoid using db specific query until necessary
This is some other JDBC best practise inwards Java which ensures writing portable code. Since most of JDBC code is filled upward amongst SQL query its slow to maiden of all using Database specific characteristic which may acquaint inwards MySQL but non inwards Oracle etc. By using ANSI SQL or past times non using DB specific SQL y'all ensure minimal alter inwards your DAO layer inwards instance y'all switch to some other database.
JDBC Best Practice #10: Use right getXXX() method
This is the in conclusion JDBC best practise inwards this article which propose using right getter spell getting information from ResultSet to avoid information conversion fifty-fifty though JDBC allows to larn whatsoever information type using getString()or getObject().
That's all on JDBC best practices for Java Programmer, I am certain at that topographic point are many to a greater extent than JDBC best practices exactly about but these are most mutual practices which I tin mean value of. permit us know if y'all are familiar amongst whatsoever other JDBC best practice.
Further Learning
JSP, Servlets together with JDBC for Beginners: Build a Database App
Complete JDBC Programming Part 1 together with 2
10 best practices to follow spell writing code comments
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