Salesforce.com Lightning and Lightning Web Component – Learn & Share
131. Describe the difference between data and database administration. Data administration is responsible for the overall management of data resources. Some of the core roles include the creation of data polices, procedures and standards, resolve data ownership issues, and manage…
Read More121. Describe middleware applications that ease the connection of databases to Web applications. Both ASP and ColdFusion are middleware that ease the connection of databases to Web applications. Both require the use of several files. Both use tags and are…
Read More111. Explain a join between tables A join allows tables to be linked to other tables when a relationship between the tables exists. The relationships are established by using a common column in the tables and often uses the primary/foreign…
Read More101. What are the four objectives of the selection of a data type? A data type should be selected so that all possible values are represented using minimal storage space. The data type should help to ensure data integrity and…
Read More91. Explain the difference between total specialization and partial specialization. Total specialization exists when every instance of a supertype must also be an instance of a subtype. Partial specialization exists when every instance of a supertype does not have to…
Read More81. Briefly explain the five components of an Information Systems Architecture and their relationship to data. Processes that manipulate the data. Networks that transport the data. People who process and use the data. Events and point in time when processes…
Read More71. What is a data mart? A data mart is a collection of data smaller in scope and size than a data warehouse. It is dedicated to data from a particular business component of business functional area. A data mart…
Read More61. Why is XML a better markup language than HTML? XML is a better markup language than HTML, primarily because XML provides a clear separation between document structure, content, and materialization. Symbols cannot be used ambiguously with XML.
Read More51. What is the difference between SQL Server 2000 complete and differential backups? A complete backup makes a copy of the entire database. A differential backup makes a copy of the changes that have been made to the database since…
Read More41. Explain the difference between an exclusive lock and a shared lock. An exclusive lock prohibits other users from reading the locked resource; a shared lock allows other users to read the locked resource, but they cannot update it.
Read More