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--- android_learning:headfirst_android_development_notes:chapter_11 [2016/03/16 23:40] – [p. 452: Code block] mithat
+++ android_learning:headfirst_android_development_notes:chapter_11 [2016/04/23 22:23] (current) – [p. 444: Code block] mithat
@@ Line 1: / Line 1: @@
 ====== Chapter 11 ======
-<WRAP center round info 60%>
+===== Foreword =====
-Under development.
+If you are not familiar with the term CRUD as applied to databases, it is an acronym for **C**reate (or Insert), **R**ead, **U**pdate, and **D**elete---the four main operations that are done on database records. It's often helpful to approach learning database stuff with these four primary operations in mind.
-</WRAP>
-You may hear the term "CRUD" used in relation to databases. And if you haven't, you have now. CRUD is a acronym for **C**reate (or Insert), **R**ead, **U**pdate, and **D**elete---the four main operations that are done on database records. It's also helpful to think in terms of database //schema//---the plan or layout of the database table(s).
+It's also helpful to think in terms of database //schema//---the plan or layout of the database table(s).
-The book consistently uses "a" as the indefinite article ahead of "SQLite"---most probably because they assume a pronunciation of "sequel lite." The primary author of "SQLite" [[https://youtu.be/jN_YdMdjVpU?t=1m7s|sees things differently]], so the indefinite article should be "an".
+The book consistently uses "a" as the indefinite article ahead of "SQLite"---most probably because they assume a pronunciation of "sequel lite." The primary author of SQLite [[https://youtu.be/jN_YdMdjVpU?t=1m7s|sees things differently]], so the indefinite article should be "an".
 ===== p. 444: Code block =====
@@ Line 33: / Line 32: @@
 }
 </file>
-Note that the constructor in the above class definition creates compiler rage. It gets fixed on the following page.
+The constructor in the above class definition will create compiler rage---which is fixed on the following page. But if you're impatient, the solution is to invoke to parent class' ctor:<code java>
+    StarbuzzDatabaseHelper(Context context) {
+        super(context, DB_NAME, null, DB_VERSION);
+    }</code>
 ===== p. 447: Schema definition =====
-You create the schema for your database in the ''SQLiteOpenHelper'''s ''onCreate'' method using plain old SQL on the SQLite database that's passed in.
+You create the schema for your database in the ''SQLiteOpenHelper'''s ''onCreate'' method using plain old SQL on the SQLite database that's passed in. (If you've not seen SQL before, don't worry. It's the "standard" language used by databases for conducting transactions, and the basics are explained by example in the book.)
 <code java>
@@ Line 88: / Line 91: @@
 </code>
-<WRAP center round info 90%>
+<WRAP center round important 90%>
-Calling delete with null ''whereClause''e and ''whereArgs'' arguments will delete all the records in the database.
+Calling ''delete()'' with null ''whereClause'' and ''whereArgs'' arguments will delete all the records in the database.
 </WRAP>
 ===== What about Read? =====