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Define lock?
Lock is the most common used to execute the requirement is to permit a transaction to access a data item only if it is currently holding a lock on that item.
sql is relationally complete-justify
You are required to design and build a data mart/data warehouse using Oracle. A national bank allocates funding every year for its local branches to provide temporary staff cove
what is primary key
Describe an data dictionary? A data dictionary is a data structure which keeps meta data about the structure of the database ie. the schema of the database.
explain three types of internet risks to the consummers whent he business system is data dependent. how can we minimise these risks
When a function module is activated syntax checking is performed automatically. YEs, a function module is activated syntax checking.
What are attributes? Give examples. An entity is shown by a set of attributes. Attributes are descriptive properties possessed by every member of an entity set. Example: pos
How can you terminate the MySQL Server? Typing the following in Command prompt will shut down the server completely as root user % mysqladmin -u root -p shutdown
What is the max. no. Of structures that can be included in a table or structure. Nine.
What is Information System?
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