Study Notes of MySQL 2 —— Manipulation, Definition and Transaction Control
- DML (Data Manipulation Language)
- DDL (Data Definition Language)
- TCL (Transaction Control Language)
Domain | percentage of Examination |
---|---|
Domain 1: Design Resilient Architectures | 30% |
Domain 2: Design High-Performing Architectures | 28% |
Domain 3: Design Secure Applications and Architectures | 24% |
Domain 4: Design Cost-Optimized Architectures | 18% |
TOTAL | 100% |
Some people prefer to buy technological devices as soon as they are available to the public, while other people prefer to wait.
Schools always collect information about teachers’ teaching performance and give rewards to those teachers who perform well.
etc
Some people believe that television has had a positive influence on society. Others believe it has had a negative influence on society.
Some college students choose to take courses in a variety of subject areas in order to get a broad education. Others choose to focus on a single subject area in order to have a deeper understanding of that area.
etc
The study notes during the internship period of AWS, including AWS Global Infrastructure, Networking in AWS, Storage in AWS, Compute in AWS and Database in AWS, to name a few.
The model is to approximate the input attraction-ToI matrix with three factor matrices that assign cluster labels to tourist attractions and Things of Interest (ToI) simultaneously by solving the following optimization problem:
minU,H,V≥0O=‖X−UHVT‖2FUTU=I,VTV=IminU,H,V≥0O=∥∥X−UHVT∥∥2FUTU=I,VTV=Iwhere XX is the input attraction-word content matrix, and $U ∈ R^{m×c}{+}andandV ∈ R^{n×c}{+}areorthogonalnonnegativematricesindicatinglow−dimensionalrepresentationsofattractionsandthingsofinterest,respectively.Theorthogonalandnonnegativeconditionsofthetwomatricesareorthogonalnonnegativematricesindicatinglow−dimensionalrepresentationsofattractionsandthingsofinterest,respectively.TheorthogonalandnonnegativeconditionsofthetwomatricesUandandVenforcethemodeltoprovideahardassignmentofclusterlabelforattractionsandthingsofinterest.enforcethemodeltoprovideahardassignmentofclusterlabelforattractionsandthingsofinterest.H ∈ R^{c×c}_{+}providesacondensedviewofprovidesacondensedviewofX$ .