Databases demystified by Andy Oppel

By Andy Oppel

"Now you could layout, construct, and deal with an absolutely useful database very easily. completely up-to-date to hide the newest applied sciences and strategies, Databases Demystified, moment version supplies the hands-on assist you have to start. Written in a step by step structure, this sensible consultant covers equipment that may be used with any database, together with Microsoft entry, MySQL, Microsoft SQL Server, and Oracle. you will find out about relational database parts, database queries, SQL, the database lifestyles cycle, logical database layout utilizing normalization, and actual database layout. facts and method modeling, database safety, on-line Analytical Processing (OLAP), and XML also are covered." -- again conceal. learn more... Database basics -- Exploring relational database elements -- Forms-based database queries -- advent to SQL -- The database lifestyles cycle -- Logical database layout utilizing normalization -- facts and strategy modeling -- actual database layout -- Connecting databases to the skin international -- Database protection -- Database implementation -- Databases for on-line analytical processing -- Integrating XML records and gadgets into databases

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In the network model contents examFigure 1-5 • Network model structure for ple shown in Figure 1-6, each parent-child Northwind Chapter 1 D ata b a s e F u n d a m e n ta l s (from previous customer) Order: 56 Order Detail: Product 28 Customer: 6 (to next customer) Order: 79 Employee: 2 Order Detail: Product 7 Order Detail: Product 51 (Other Employee 2 Orders) Figure 1-6 • Network model record contents for Northwind relationship is depicted with a different type of line, illustrating that each has a different name.

In its pure form, permits only one parent for any given record D. Connects data in a hierarchical structure using physical address pointers E. Allows the processing of sets of database records 4. The network database model: A. Allows the processing of sets of database records B. Allows multiple parents for any given database record C. Was first proposed by Dr. F. Codd D. Is known for its simplicity of use E. Connects database records using physical address pointers 5. The object-oriented model: A.

The remainder of this book will focus on the relational model, with some coverage of the object-oriented and object-relational models. Aside from the relational model being the most prevalent of all the database models in modern business systems, there are other important reasons for this focus, especially for those learning about databases for the first time: • Definition, maintenance, and manipulation of data storage structures is easy. • Data is retrieved through simple ad hoc queries. • Data is well protected.

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