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Database systems: Volume 1 D. Lewis CO2209 2016 Undergraduate study in Computing and related programmes This is an extract from a subject guide for an undergraduate course offered as part of the
“This is a well-written, well-organized guide to the practice of database administration. Unlike other books on general database theory or relational database theory, this book focuses more directly on the theory and reality of database administration as practiced by database profes sionals today, and
Having independent and identically distributed (IID) data is a common assumption for statistical procedures and hypothesis tests. But what does that mouthful of words actually mean? That’s the topic of this post! And, I’ll provide helpful tips for determining whether your data are IID.
I am trying to understand the difference between iid and non-iid data. Let's consider a given time series, and say it's reasonable to assume that at each time point the random variable $X_t$ depends on $X_{t-1}$. Now say someone gives me the dataset $ D = \{ ( t_i, x_i ) \} $ for $i=1 \dots n$.
Database: A very large, integrated collection of data. Examples: databases of customers, products,... A database usually models (some part of) a real-world enterprise. A Database Management System (DBMS) is a software package designed to store and manage databases.
The data administrator is now one of the key persons involved in the development of databased information systems. We also describe some of the key functions of the database administrator, particularly the development of views and granting data and facilities privileges to users via some DBMS.
Explain the importance of data security and database security. Show how data dictionaries and CASE tools fit into data administration. Answers to Review Questions
