إنتقال للمحتوى

  • تسجيل الدخول عبر الفيس بوك تسجيل الدخول عبر تويتر Log In with LinkedIn Log In with Google      تسجيل دخول    
  • إنشاء حساب

صورة
- - - - -

ماهو البليس هولدر وما هو ماترياليزد فيو


4 رد (ردود) على هذا الموضوع

#1 ahmedkhaled

ahmedkhaled

    عضو نشط

  • الأعضــاء
  • 264 مشاركة
  • الاسم الأول:Ahmed
  • اسم العائلة:Khaled
  • البـلـد: Country Flag
  • المنصب الحالي:Senior Oracle developer

تاريخ المشاركة 27 August 2009 - 01:57 AM

السلام عليكم ورحمة الله وبركاته
سألني احد الاخوه عن البليس هولدر و ماترياليزد فيو وقالي انهم جولو في انتر فيو وهو مش عارف الاجابه ولا انا ياريت التشرف بالرد علينا في هذه الاسئله وجزاكم الله خير

#2 mongi.benali

mongi.benali

    عضو

  • الأعضــاء
  • 3 مشاركة

تاريخ المشاركة 27 August 2009 - 11:20 AM

ألسلام عليكم إخي:
1- A Placeholder is a predefined location in a JSP that displays a single piece of web content at a time that is dynamically retrieved from the WLP Virtual Content Repository. If more than one content query is registered for a Placeholder, the Placeholder uses predefined queries and logic to determine which query to run and which content item to display. If a content query does not return data, the Placeholder runs another registered query, if there is one. Each query has a priority, or weight that determines the specific content to display.

2- In a database management system following the relational model, a view is a virtual table representing the result of a database query. Whenever an ordinary view's table is queried or updated, the DBMS converts these into queries or updates against the underlying base tables. A materialized view takes a different approach in which the query result is cached as a concrete table that may be updated from the original base tables from time to time. This enables much more efficient access, at the cost of some data being potentially out-of-date. It is most useful in data warehousing scenarios, where frequent queries of the actual base tables can be extremely expensive.
In addition, because the view is manifested as a real table, anything that can be done to a real table can be done to it, most importantly building indexes on any column, enabling drastic speedups in query time. In a normal view, it's typically only possible to exploit indexes on columns that come directly from (or have a mapping to) indexed columns in the base tables; often this functionality is not offered at all.
Materialized views were implemented first by the Oracle database.
There are three types of materialized views:
Read only
Cannot be updated and complex materialized views are supported
Updateable
Can be updated even when disconnected from the master site.
Are refreshed on demand.
Consumes fewer resources.
Requires Advanced Replication option to be installed.
Writeable
Created with the for update clause.
Changes are lost when view is refreshed.
Requires Advanced Replication option to be installed.

أرجو أن تستفيد من هذه المعلومات.

#3 mongi.benali

mongi.benali

    عضو

  • الأعضــاء
  • 3 مشاركة

تاريخ المشاركة 27 August 2009 - 11:21 AM

ألسلام عليكم إخي:
1- A Placeholder is a predefined location in a JSP that displays a single piece of web content at a time that is dynamically retrieved from the WLP Virtual Content Repository. If more than one content query is registered for a Placeholder, the Placeholder uses predefined queries and logic to determine which query to run and which content item to display. If a content query does not return data, the Placeholder runs another registered query, if there is one. Each query has a priority, or weight that determines the specific content to display.

2- In a database management system following the relational model, a view is a virtual table representing the result of a database query. Whenever an ordinary view's table is queried or updated, the DBMS converts these into queries or updates against the underlying base tables. A materialized view takes a different approach in which the query result is cached as a concrete table that may be updated from the original base tables from time to time. This enables much more efficient access, at the cost of some data being potentially out-of-date. It is most useful in data warehousing scenarios, where frequent queries of the actual base tables can be extremely expensive.
In addition, because the view is manifested as a real table, anything that can be done to a real table can be done to it, most importantly building indexes on any column, enabling drastic speedups in query time. In a normal view, it's typically only possible to exploit indexes on columns that come directly from (or have a mapping to) indexed columns in the base tables; often this functionality is not offered at all.
Materialized views were implemented first by the Oracle database.
There are three types of materialized views:
Read only
Cannot be updated and complex materialized views are supported
Updateable
Can be updated even when disconnected from the master site.
Are refreshed on demand.
Consumes fewer resources.
Requires Advanced Replication option to be installed.
Writeable
Created with the for update clause.
Changes are lost when view is refreshed.
Requires Advanced Replication option to be installed.

أرجو أن تستفيد من هذه المعلومات.

#4 ahmedkhaled

ahmedkhaled

    عضو نشط

  • الأعضــاء
  • 264 مشاركة
  • الاسم الأول:Ahmed
  • اسم العائلة:Khaled
  • البـلـد: Country Flag
  • المنصب الحالي:Senior Oracle developer

تاريخ المشاركة 27 August 2009 - 06:30 PM

يإخواني بجد الف شكر ليكو وجزاكم الله كل خير على الاهتمام وعلى الرد السريع جدا ده




إن الله في عون العبد ما دام العبد في عون اخيه



#5 hossam160

hossam160

    عضو نشط

  • الأعضــاء
  • 267 مشاركة
  • البـلـد: Country Flag

تاريخ المشاركة 28 August 2009 - 02:35 PM

هو الناس بتوع office مش هيبطلو يسالو الأسئلة دية بقى

حمل مواد تعليمية للأوركل فيديو


http://www.mediafire.../?frl5nakibiejr


رضينا بالديفولبر والديفولبر مشراضى بينا


ارفع ملفاتك مع اسرع موقع للرفع والتحميل فى نفس الوقت

صورة