datamodel

Evaluating HDF5: What limitations/features does HDF5 provide for modelling data?

by

How does HDF5 compare against using something like an SQLite DB? Is that even a reasonable comparison to make? Sort of similar but not really. They’re both structured files. SQLite has features to support database queries using SQL. HDF5 has features to support large scientific datasets. They’re both meant to be high performance. Over time … Read more

what is difference between a Model and an Entity

by

The definition of these terms is quite ambiguous. You will find different definitions at different places. Entity: An entity represents a single instance of your domain object saved into the database as a record. It has some attributes that we represent as columns in our tables. Model: A model typically represents a real world object … Read more

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)