FIND AND DELETE DUPLICATE RECORDS IN A TABLE

Jennifer Widom
Constraints Triggers
Triggers –
Introduction
Jennifer Widom
Triggers
Triggers
“EventConditionAction Rules”
When event occurs, check condition; if true, do action
1) Move monitoring logic from apps into DBMS
2) Enforce constraints
 Beyond what constraint system supports
 Automatic c[r]

ARTIST: Avril LavigneSONG: Skater Boy-------------------------------------------------------------------------------------------------------Task: Before listening to the song choose the correct phrase in the lyrics, and answer the questions below.1. If the story is about a boy <[r]

present continuousThe chef is boiling some potatoes in a saucepan.b) Find the content words and underline the stressed syllable in each onec) Write the sentence again, syllable by syllable (where possible, use vc sound connections)The chef is boi ling some po ta to[r]

TASK 1Curran says there are 6 elements of effective learning: security, aggression, attention, reflection,retention, and discrimination.Can you find some examples of these in the class described in the book?TASK 2One basic principle of CLL is “Learning is persons,” which[r]

• Each phonics book is a collection of sentences highlighting a particular phonics pattern. These are not actual stories like you might find in a purchased series or the Rhyme to Read app. However, you’ll find that the bright and engaging pictures will keep your child’s attention
• Each book featur[r]

B. post officesD. many post offices17. This math problem is very_______I cannot solve it.VnDoc - Tải tài liệu, văn bản pháp luật, biểu mẫu miễn phíA. beautifulB. difficultC. uglyD. weak18. The lifts are over there_______the left.A. atB. onC. withD. inRead the text and choose the answer[r]

... gives information comparing investors in this sample to mutual fund investors in general Panel A of the table shows that in 2000, 83.2% of the holdings in my sample are in equity funds, 6.7% are in. .. avoid admitting that their original purchase decision was a mistake, so they avoid realizing l[r]

Allison Peterson lives in Cornfield Road 13425. She's got a son, a daughter, a cousin, a neighbour and a dog. Inthis logic game you can find out what they usually do on Sundays. Look at the clues, fill in the charts, and thenwrite[r]

We now tackle the second problem that paging introduces: page tables are too big and thus consume too much memory. Let’s start out with a linear page table. As you might recall1, linear page tables get pretty big. Assume again a 32bit address space (232 bytes), with 4KB (212 byte) pages and a 4byte[r]

27 THINGS TO DO WITH STUDENTS WHO ARE NOT PAYING ATTENTIONASK: ask them to repeat what was just said.STAND: stand next to themGIVE; give them the marker and ask them to be the record keeperSHOW: grab their attention by showing a short filmGET UP: get up and moveGIVE: take a