Mohammed N. S. Al Saadi
PL/PGSQL Triggers تعلم بوستغرس
PL/PGSQL Triggers تعلم بوستغرس
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Postgresql PL/PGSQL Triggers
نتحدث في هذه الدورة عنها بالتفصيل...ما هي ولماذا نستخدمها وأنواعها ومتى نستخدم هذه الأنواع .
سنشرح كل هذا بأمثلة على خادم بوستغرس حقيقي وقاعدة بيانات تحتوي على جداول حيث نقوم بتطبيق جميع أنواع ترجرز على جداول مختلفة لنرى كيف ستؤثر هذه ترجرز على التغييرات في الجداول الخارجية.
بعد ذلك سنرى ما هي النقاط الخاصة التي نحتاج إلى الاهتمام بها عند استخدام ترجرز مثل هذه النقاط التي يمكن أن يكون لها تأثير كبير على نتيجة استعلاماتنا التي نطبقها على قاعدة البيانات.
خلال الدورة، سيتم تزويدك بمصادر من دليل بوستغرس للتحقق مرة أخرى من تطبيقاتك لل ترجرز على جداول قاعدة بيانات بوستغرس.
Triggers Functions سنتحدث في هذه الدورة أيضاعن
سنرى أيضًا تأثير كلا النوعين من وظائف ترجرز... وكيف يمكن ربط كل نوع مع كل نوع من ترجرز (أي the per-statement ; per-row triggers).


IN CASE YOU’RE WONDERING.
Frequently asked questions
Shipping
All prints are printed and shipped from Uk .
UK Orders are dispatched by Royal Mail 24, which is a 1 to 3 day service, but not guaranteed. Orders with finishing
International print orders are dispatched by Airmail, delivery times will depend on where the order is being sent;
Europe: 4 to 5 working days.
Rest of the world: 6 to 7 working days.
Please allow up to 25 working days for delivery to Europe and 32 working days for delivery to the rest of the world. These timescales allow for packages to be delivered and held by relevant postal services, before being returned to us, should delivery attempts fail.
Returns
As everything we print is bespoke we do not accept returns. If an item is damaged or lost in transit we will offer a replacement free of charge. A parcel is considered lost if it has not been delivered within 25 working days in Europe and 32 working days for the rest of the world. This timescale allows a parcel to be returned to the sender (us), if this is the case we will contact you and let you know that it has been returned. If incorrect address details have been provided, or your customer has failed to collect the package following delivery attempst no replacement / refund will be offered.
Packaging
Flat Print Wrapping
Sometimes referred to as a back and wrap, our Flat Print Wrapping service is an acid free backing board cut to the same size as your print's overall size, then wrapped in a see through wrap/sleeve.
Eco Wraps
Our biodegradable and compostable wraps for prints are available in 9 standard print sizes, these wraps are made from vegetable (corn/potato) starch and will naturally biodegrade in compost sites, the sleeves themselves have a shelf life of over 12 months. The wraps should be kept in cool and dry conditions as heat and humidity can decrease the life of this product.
Paper
- Hahnemühle William Turner
- Weight, 310gsm
- Texture Textured
- Finish, Matt
- Thickness, 0.62mm
- Whiteness, 4.5
- Acud free, lignin free and free from OBAs.
Wiliam Turner is a beautiful Fine Art paper of extremely high quality. It has a highly pronounced textured surface. Featuring a crisp, clean, and beautifully tactile feel, its premium coating meets the highest standards for colour reproduction and image sharpness. The natural whiteness feel make it preferred among fine artis reproduction paper.