3. What is a data model? Hierarchical | Network | Relational | Entity-relationship model

Category：technology

2024-03-29

Category Latest News

Alibaba has opened a new company ~ Lingyang. On June 29, Lingyang held a new brand launch conference online. Peng Xinyu, vice president of Alibaba Group and CEO of Lingyang, explained that sheep are light, fast and good at running; - DayDayNews
Google has finally reached a settlement in a 2021 class-action antitrust lawsuit that left the company owing US app developers $90 million. The lawsuit claims that the Google Play Store's 30% discount on all in-app purchases is too high, especially since developers don't have goo - DayDayNews
Recently, the "Wired 2022" Magnetic Engine Partner Conference was held in the form of a "cloud meeting". Kuaishou released a new market business framework of "Internal and External Liaison Products" to continue to empower tens of millions of industries to take root and grow in th - DayDayNews
What will happen if mobile phone manufacturers continue to involute? As we all know, this year’s Snapdragon 8 Gen1 processor is the standard for high-end flagship phones, and most commercial models are priced at more than 4,000 to 5,000 yuan. - DayDayNews
This is Yitu Technology (formerly "Camera Notes"). Not long ago, Fujifilm released the flagship product X-H2S of the 5th generation X series cameras. This is the first APS-C frame mirrorless camera using stacked CMOS, and it is currently the only non-full-frame camera that featur - DayDayNews
Hello, this is the Network Technology Alliance site. VRRP is a commonly used fault-tolerant protocol that can improve the reliability of the network. Today Rui Ge will introduce the VRRP protocol in detail. Let’s get straight to it! What is VRRP? - DayDayNews
How to choose a reliable Nanjing Java software development training institution? I don’t know if there are any reliable training courses in Nanjing, but in Beijing, where I am located, there are nearly a hundred IT training institutions, large and small, that offer Java courses. - DayDayNews
Hello friends, today Lao Du will tell you about this 996. If you still agree with my point of view, please click on it! "Today, Chinese BAT companies can do 996. I think it is a blessing for us people. " - DayDayNews
Beijing Daily Client | Reporter Feng Jiawei Correspondent You Jun Xiao Mingkui Shi Yu On June 30, Xintian Primary School in Caidian District, Wuhan City, Hubei Province was completed and entered the acceptance stage. The school was built by CCCC Fourth Harbor Engineering Co., Ltd - DayDayNews
How many new products has Xiaomi prepared this time? The first Qualcomm Snapdragon 8+ is not enough, and there is another Dimensity 9000+ version. There are really many models to choose from in the 12S series this time. Mr. Lei is afraid this is the best one so far. Xiaomi's most - DayDayNews

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