Seagate ST43401N/ND Informations techniques télécharger pdf (Page 57)

Migrating to Sybase Adaptive Server Enterprise 11.5 5-3

Adaptive Server Enterprise 11.5 If Your Current Version is 4.x

New Login and Password Protocols

• New logins and changed passwords require a minimum 6-byte

password. Existing passwords smaller than 6 bytes are left alone

during upgrade, but the 6-byte minimum is enforced if you add

or change passwords.

• Null passwords are not allowed. You need not change existing

passwords. The next invocation of

sp_password will enforce the

new rules.

• Expired passwords can cause problems for applications with

embedded passwords. If the

systemwide password expiration is set to 0

(default), passwords do not expire.

➤

Note

Adaptive Server 11.5 enables you to protect sensitive data with several

security features, including user identiﬁcation and authentication,

discretionary access controls, division of roles, and event auditing. See the

Security Administration Guide

and the

Security Features User’s Guide

Datatype Changes

The following sections discuss changes to and additions to

datatypes:

• New Datatypes and New Default 5-3

• Datatype Hierarchy 5-5

• Datatype Conversions 5-6

• ANSI SQL92 Support for Conversion Error Handling 5-7

New Datatypes and New Default

Two new datatypes, numeric and decimal, were introduced in version

10.0. Unlike ﬂoat, they are platform independent and exact. An exact

numeric result accommodates user-deﬁned ranges and storage sizes.

There is less risk from loss of scale due to platform differences.

However, applications may break because functions return different

datatypes than before.

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Seagate ST43401N/ND Informations techniques Page 57