Oracle Workflows Access Protection Concepts
Oracle Workflows Access Protection Concepts
As a workflow developer, you can use access protection to allow or discourage “customers” of your workflows from modifying your “seed data” workflow definitions.
作为工作流开发者，你可以利用访问控制保护权限来允许或阻止工作流的使用者修改你最终
定义的工作流。
As a customer of predefined workflows provided by Oracle, you can use access protection to preserve valid customizations you have made to a predefined workflow during a workflow definition upgrade.
作为甲骨文提供的预定义工作流，你可以利用访问控制权限来保护你对工作流的有效的客户化升级。
All workflow objects except lookup codes, function attributes, and message attributes contain an Access tab in their property pages. Lookup codes, function attributes, and message attributes inherit their access settings from their parent lookup type, function, or message, respectively.
除了Lookup代码，函数属性和消息属性的其他所有工作流对象都包含控制属性标签页。Loopup，函数属性和消息属性分别继承它们父类型的访问控制权限。
The Access tab lets you define whether:
•Future customizations to the object are preserved during a workflow definition upgrade.
•The object can be edited by users operating at a higher access level.
访问标签可以让你定义是否：
在工作流升级的时候，保护未来经过客户化的对象
对象可以在更高的访问级别上被编辑。
ACCESS LEVELS
访问级别
Each user of Oracle Workflow Builder operates the system at a certain access level.
The access levels are defined as follows:
ü 0-9: Reserved for Oracle Workflow
ü 10-19: Reserved for Oracle Application Object Library
ü 20-99: Reserved for Oracle E-Business Suite
ü 100-999: Reserved for customer organizations
ü 1000: Public
每个 Oracle Workflow Builder 的使用�
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ORACLE中数据字典视图分为3大类, 用前缀区别，分别为：USER，ALL 和 DBA，许多数据字典视图包含相似的信息。
USER_*:有关用户所拥有的对象信息，即用户自己创建的对象信息
ALL_*：有关用户可以访问的对象的信息，即用户自己创建的对象的信息加上其他用户创建的对象但该用户有权访问的信息
DBA_* ......
查询用户信息
SELECT USERNAME,DEFAULT_TABLESPACE, TEMPORARY_TABLESPACE, PROFILE, ACCOUNT_STATUS, CREATED from dba_users; 查询用户空间使用和上限情况
SELECT username, tablespace_name, bytes/1024/1024 space_used_in_mb, max_bytes/1024/1024 max_space_in_mb from dba_ts_quotas; 创建 ......
1. ASCII
返回与指定的字符对应的十进制数;
SQL> select ascii(A) A,ascii(a) a,ascii(0) zero,ascii( ) space from dual;
A A ZERO SPACE
--------- --------- --------- ---------
65 97 48 32
2. CHR
给出整数,返回对应的字符;
SQL> select chr(54740) zhao,chr(65) chr65 from dual;
ZH C
-- -
赵 A
......
1. Read the Data Block.
2. Read the Row Header.
3. Check the Lock Byte to determine whether there's an ITL entry.
4. Read the ITL entry to determine the Transaction ID (Xid).
5. Read the Transaction Table using the Transaction ID. If the transaction has been committed and has a System Commit ......
