SQL语句在MSSQLSERVER中是能用的。 在ORACLE，SYSBASE，MYSQL，DB2，ACCESS中要怎样写呀？(50分)

CommandText &nbsp; :='begin &nbsp; transaction <br>UPDATE &nbsp; &nbsp; &nbsp; 表1 &nbsp; &nbsp; &nbsp; SET &nbsp; &nbsp; &nbsp; 字段1=1 <br>UPDATE &nbsp; &nbsp; &nbsp; 表2 &nbsp; &nbsp; &nbsp; SET &nbsp; &nbsp; &nbsp; 字段2=1 &nbsp; <br>if &nbsp; @@error=0 &nbsp; <br>commit &nbsp; transaction <br>else <br>rollback &nbsp; transaction <br><br>SQL语句在MSSQLSERVER中是能用的。 &nbsp; 在ORACLE，SYSBASE，MYSQL，DB2，ACCESS中要怎样写呀？